In 2011, Alejandro had departed from a long line of metal bands and progressive metal acts who played across most of Southwest Ohio. The long time spent both playing live, touring and the difficult nature of working in bands created a need for Alejandro to start working on solo projects and musical outlets that would serve the purpose of expressing his art form on his own. This was when in 2012 the foundations of the material that would later form the now removed LP “The Oneiroi” started to be composed. Alejandro spent the greater part of 2012 composing riffs and tracks that would form this LP and would start recording these in his home studio. Toward the end of 2013 this work was released quietly and was not very warmly received but was noticed by several other guitarists in the same niche genre. Inside of a particularly unique genre of music that created a community of guitarists that connected with one another. This music would be later used for re-releases and some of these tracks were harvested for musical ideas that would later appear spanning across EPs and LPS in future releases. At this period in the band's development, Alejandro was the only musician creating and writing for the band. While it was much of a self-created project, Alejandro had the help of his best friend and contributing drummer at the time, AJ Ryan. AJ developed the original drum parts for what would later be known as the band's first successful single from the subsequent EP Ascension,  the song “Afterglows (Of the Greatest Explosions in the Universe)”. “Afterglows” was the song that led to a completely new concept of what the Crossing the Rubicon sound could be and it would open the door for the next EP that would take two years to write and release. 

The follow-up to the LP “The Oneiroi”, was the original writing of the track “Afterglows (Of the Greatest Explosions in the Universe)”, and the subsequent tracks that formed part of Ascension. Ascension was a very special release because of the amount of guest guitarists that formed the leads, solos, and other performances including the introduction of brass & woodwind instrumentation. The woodwind instrument would then later be formed as a major staple and what defined the Crossing the Rubicon sound. Ascension included several prominently featured tracks such as “Levitation”, “It’s Biodigital Jazz, Man”, “And He Built a Crooked House” and the single “Afterglows (Of the Greatest Explosions in the Universe)” and “Chrysanthemum”. The hit song from this release was“It’s Biodigital Jazz, Man” and this was featured on the then popular internet magazine “It Djents” (now ‘Everything Is Noise’) and “Prog Sphere”. these two publications greatly helped Crossing the Rubicon come to the light of the progressive instrumental circle and provided some attention for the band in a time when many instrumental acts were saturating the scene. The songs produced some playthroughs and videos which were released on youtube.com. This also sparked the birth of the YouTube channel Crossing the Rubicon TV as well as other online publication and streaming options which were later much more available and developed for the band. At this time the band had its first major publication for the EP Ascension through Spotify, Pandora, Last.fm, Apple Music, and Amazon. Through mass circulation “It’s Biodigital Jazz, Man”, became a popular hit that appeared across many playlists through popular streaming services. This helped Crossing the Rubicon stay relevant and later would be defined as the brink that would help the next singles stand out.  Guest guitarists for this EP would include Tomáš Raclavský (Modern Day Babylon), Spencer Barnett (Under the Combine), Jonathan Carpenter (ex- The Contortionist), Paul Ozz (Paul Ozz), Mark Hawkins (Devolved/Robots Pulling Levers), Chris Catharsis (SoulCycle), Aldi Ojeda (Jazz Cuyabeno), Alfonso Fullbore Williams (Harmonikk Abyss), Chris Aldridge (National Headcase), Mathias Ulrick (Mathias Ulrick), Allen Patrick (ex Mental Floss), Nikhil Singh (Shavasva), Madison Jones (Parallax), Eric Webber, Josh Norris (ex-Ride To Ruin), Keigo Yoshida (The Blue Prison), Andrey Sazonov (Amogh Symphony/Halcyan). 

2016 saw the release of ““Bloom”” which was a massive part of the future for Crossing the Rubicon as well as extremely well-received. This track also featured some prominent guest guitarists that appeared as a result of the success of the previous EP. “Bloom” was originally a 12-minute epic which was the first time that Crossing the Rubicon found Alejandro finding himself contributing with writing duties with other musicians. The drum work was massively supported by the widely known and incredibly busy drummer Bryce Butler (Shadow of intent, Abigail Williams, Bryker), and his longtime local best friend Parker Bracken. “Bloom” also featured for the first time saxophone as a direct woodwind instrument that would be later used massively and also create the place for this instrument in the official final lineups when playing live. The saxophone sound combined with the instrumental progressive rock and metal edge gave Crossing the Rubicon a jazz feel that was never perceived before in such a way. “Bloom” was well-received along with its content including play throughs, stream videos and other media that supported the publication of this single. Subsequently “The Sum of All Things” was a production that started to develop as a result of Alejandro's desire to take the band to the live stage. In the later part of 2016 the suggestion for the music to be performed on a live stage was consistently being brought to the attention of founding guitarist Alejandro. He then started to search local musicians including drummer Shane Cundiff, guitarist Steve Morris, saxophone player Joseph Bradley Hutchinson and bassist Jeremy Stone. The first line up for Crossing the Rubicon was gathered through a connection of friendships and local history. Guitarist Steve Morris had grown up in the same neighborhood as Alejandro and both were teenagers when they were developing their guitar playing skills. Steve Morris and Alejandro worked together on the development and original song writing for “The Sum of All Things”. This work was very productive and well received by other band members and showed promise, Steve Morris' time in the band was very short-lived. The music was later redeveloped and rewritten by Alejandro and a lot of the work that was put into drums as well as bass was also redeveloped after other musicians departed. The final line-up for this particular EP was AJ Ryan re-introducing himself as a “consultant”  of the percussive and drum work as well as Joseph Bradley Hutchinson as the final saxophonist who actually performed and recorded all the saxophone work on “Bloom” as well as “The Sum of All Things”. At this point in time the only staple musician who had formed a solid part of the lineup was Joseph Bradley Hutchinson who would then later be introduced to up-and-coming forming band member Dave Woehrle.  The final contributing guest list for “Bloom” included a vast array of still widely known guitarists. Joseph Bradley-Hutchinson: Saxophone, Parker Bracken: Guitar solo, drum programming & piano, Johnny Ciardullo (Galactic Pegasus) Bass, Dylan Fürr (Dylan Fürr Band) Chris Gordon (Bam Margera), Jimmy Van Cleaf, Kee Poh Hock (Native Construct), Diego Hernandez Sierra (Mauna), Alex Campbell (Seek Irony/ Warner Bros. Records).

Dave Woehrle and Deven Jahnke, were recruited through the online music scene of the Dayton local area. Bass player and guitarists, respectively, they were introduced to saxophonist Joseph Bradley Hutchinson and the work for the early demos of the forthcoming long-play album "Matter" were starting to form. Writing process for "Matter" was a long and drawn-out process including up to 40 demos of riffs, guitar tracks, full songs, and Productions from both Deven and Alex\jandro. These two musicians found themselves working integrally non stop for 17 months to develop songs, record, mix and treat songs for “Matter”, which was eventually a monumental step forward for the band’s sound. Given the wide reception of the previous EP “Bloom”, the audience was there during the release of "Matter" given the work that was put into both the development to improve production and songwriting. Overall the reception of "Matter" was exponentially better than that of its predecessor releases and was also a huge step forward in the now more commonly known sound of Crossing the Rubicon. In July of 2018 Saxophonist Josh Durke was recruited, originally to finish the tracking for matter but then subsequently became a full-time member of the band.  The acquisition of Josh Durke was again due to a  previous history and relationship he held with guitarist Deven as both were alumni of the same High School. Josh brought in an edge of both clarity, virtuosity and color in the woodwind instrument that was not present before with Joseph Bradley. Joseph Bradley Hutchinson was asked to depart the band as his creative input was also indecline around this time. The result of this was the development of 11 songs which would eventually form part of final songs for the LP "Matter".

The addition of Dave Woehrle to the band provided the band it's simple yet well-rounded approach to the bass as an instrument that filled not only the pocket but also sat well with the groove and gave the music a natural Jazz brilliance. With all of these factors combined Crossing the Rubicon was shaping into a very well polished writing and producing ensemble that had the capacity of releasing a very strong album. This was coupled with the desire to play live in the ability of both Alejandro and Deven to collaborate on making the live gear the real game-changing aspect for this band.

After its release in late 2018, "Matter" presented itself as the opportunity for the band to start playing shows and develop setlists that would later be played by for over  2,000 people. Crossing the Rubicon's first live show was opening for major national act Yngwie Malmsteen. This was a show that was put on by show promoter David Kevorkian. The rest of 2019 summer was full of smaller shows and gigging opportunities that provided Crossing the Rubicon the background to define their sound even further. The local scene in Southwest Ohio and some of Central Ohio was starting to get word of this Progressive instrumental band with a saxophone player. The reactions of most people at this time and the reception of Crossing the Rubicon live was perceived as an intuitive and completely different take on metal instrumental music with saxophones combined. After the Yngwie Malmsteen show, David Kevorkian approached Crossing the Rubicon about playing the Summer Slaughter Tour. This would be Crossing the Rubicon's last show as a full lineup. For the drum position, the band acquired the services of Cory Williams. An exceptionally talented and versatile drummer from Delphos Ohio. 2019 would close before the oncoming pandemic with the band having performed 7 shows, completely sold all of their merchandise and rounding off the year in conclusion as a success. 2020 would present itself as a year of dramatic changes for the band and a refacing of not only the line up but their stye.

January of 2020 opened with the departure of Deven Jahnke, as guitarist and main writing contributor. The reason behind a lot of the separation here at this point was due to the stress, exhaustion and perhaps over-exertion that occurred between 2017 and 2019. Parties separated amicably and in peace and the band expressed its massive appreciation for the contributions that Deven provided the band. With this hole in the line up as well as concerns about an impending pandemic Crossing the Rubicon inevitably entered into a hiatus. Much of this time was spent reanalyzing and discussing the potential concerns behind the current style and sound.  It was around this time the band recruited the help of drummer Zack Mann. Zacks style of big band and touring orchestral performances brought the band a much broader stroke of creative opportunities given the versatility both as a drummer and understanding music from different genres.

Josh Durke presented as much more of a leader during this time, and together with Alejandro developed the plan for a more Jazz oriented and progressively diverse sound that matched more of the genres that were appearing during this time period. Including Plini, Owane, Polyphia and Arch Echo. The band began working on exercise and experimentation projects that would help refine this sound. The decision was made to collect 3 songs from the original LP “The Oneiroi” and reassess the work there as not only usable, but something that could be released as a revisiting or writing experiment. The songs that were chosen were The Journey Parts 1 through 3 aptly titled Phantasos, Phoebetor, and Morpheus - Names that got their titles from the Greek and Roman mythology of the Sleep gods “The Oneiroi”

The upcoming EP, “Anthologies volume 1.” was developed and originally had many contributors who would then both enter and depart the band as quickly as they came. For a brief period of time during stay-at-home orders which affected the entire world throughout the 2020 pandemic of Covid-19, Crossing the Rubicon found itself in cycles of Hiatus both with the coming and going of bassist Dave Woehrle as well as pianist Eric Hickman.  Most notably in this time there was a change of bass players as Dave departed and bassist Zane Jackson participated in the band for less than 2 months.   With Eric and Zane having a small brief stint in the band the band experimented with the opportunity of understanding what it would be like to be much heavier and much more Jazzy. 

The present state of the band presents some very optimistic opportunities for creativity. The current lineup consists of Alejandro on guitar taking on duties as the major writing and production contributor as well as Zack Mann on drums.