Tony Fagenson is a guitarist, producer, songwriter and multi-instrumentalist who is best known for his work with rock bands Eve 6 and Dead Posey.

Eve 6 is an American rock band formed in 1995 in Southern California, best known for their hit singles "Inside Out" and "Here's to the Night". They disbanded in 2004, returned for numerous tours in 2007 with a new lineup, and finally reunited with all three original members in early 2011. They signed to Fearless Records in the spring of that year, and released their fourth album Speak in Code, containing the singles "Victoria" and "Curtain," in April 2012. In 2021, they released a new EP, Grim Value, and in 2022, they released a full-length album on Velocity Records titled Hyper Relevisation.