Psykosonik

Prior to forming Psykosonik, Sebastien was involved in a number of unsuccessful music projects.^[1] During the early 90s, Sebastien met Theodore Beale at The Underground in Minneapolis, which led to them starting a duo with Beale on keyboard and Sebastien on guitar and vocals. They were later joined by drummer Michael Larson and production engineer Daniel Lenz, the latter of which was also responsible for co-writing tracks with Sebastien. This led to the formation of Psykosonik, and they began recording electronic music at Sebastian's apartment where he had a recording studio, and later found performance opportunities in local clubs including First Avenue, 7th Street Entry, and Glam Slam.

The group released two albums in 1993 and 1995 respectively: Psykosonik and Unlearn. A remix of the track "Unlearn" by Josh Wink appeared on the soundtrack of the 1995 movie Mortal Kombat (although not featured in the movie itself), which became Platinum^[3] in less than a year reaching No. 10 on the Billboard 200,^[4] and was included in the 2011 Guinness World Records Gamer's Edition as the "most successful video game spin-off soundtrack album".^[5] He hangs the Platinum award in his music studio to this day.^[1] This led to them creating "It Has Begun" for the compilation album Mortal Kombat: More Kombat and "Panik Control" for the sequel Mortal Kombat Annihilation. Additionally, a selection of tracks by Psykosonik appeared in the American version of the game X-Kaliber 2097;^[6] these were resequenced for the Super Nintendo Entertainment System by Ali Lexa.

Other projects

In 1994, Sebastien started the music publishing company Power of Seven. He worked on a number of games under this name, including CyClones, and the title themes of Marathon 2: Durandal and Marathon Infinity, as well as the multimedia content product Hip Clip Music. The following year, Power of Seven was acquired by Thomas Dolby's audio technology company Beatnik (then known as Headspace),^[7] although the acquisition was not announced until 1996. This led to Sebastien becoming Headspace's production director, where he was responsible for content production, as well as composing for and managing the Headspace Music Library, and also worked on other multimedia projects. He highly enjoyed working with Dolby at Beatnik, as he was a large fan of his music during his teenage years and both shared common interests including the then-nascent Web, interactive media, windsurfing and other shared interests.^[8][9] As part of Headspace, he served as one of the composers for the game Obsidian.

Sebastien left the company in 1998 and went on to pursue new leadership roles at Silicon Valley startups including Enliven which was acquired by Excite.com in 1999. He also continued work on music and video games projects including Oni, along with fellow ex-Beatnik composer Brian Salter and sound designer Kim Cascone. Other music in the game was composed by Martin O'Donnell in collaboration with Michael Salvatori.

Although Sebastien became known for his work at Silicon Valley and Seattle companies as a technology executive, he continued writing music and eventually formed an electronica/new wave duo with Caesar Filori called Basic Pleasure Model in 2003. During the mid-2000s, they released three singles and also performed as an opening act for Thomas Dolby.^[10] The duo released further singles between 2019 and 2020.^[11] Sebastien has also released solo tracks, such as "The Turning of Summer" and "Midnight on Reef Island", and in 2022 he released the synthpop track "Summertime (I Don’t Care)".

With Psykosonik

• Psykosonik (1993)
• Unlearn (1995)

With Headspace

• Headspace Music Library V4: Midnight Soundscape (1999) – "Schizo-Trance"
• Headspace Music Library V6: Backyard Sunset (1999) – with Brian Salter, Thomas Dolby and Kim Cascone
• Headspace Music Library V8: Dreamflight (1999) – with Kim Cascone
• Headspace Music Library V9: Dreamflight 2 (1999) – with Blake Leyh and Kim Cascone
• Headspace Music Library V14: Seethroo (2000) – with Brian Salter
• Headspace Music Library V18: Backwaters (2000) – with Brian Salter

With Basic Pleasure Model

• Sunyata (2003)
• How To Live (2004)
• Outside (2019)
• Where Do We Go from Here (2020)
• Surrender (2020)
• Ephemeral (2020)

Solo works

• "Midnight on Reef Island" (2020)
• "The Turning of Summer" (2021)
• "Summertime (I Don't Care)" (2022)