Tunçboyacıyan's 2001 album Aile Muhabbeti was used as soundtrack in two films: Hemşo (2001) and Mon père est ingénieur (2004). Serart is one of his latest efforts, a collaboration between himself and Serj Tankian (singer of the alternative metal band System of a Down), who have found common ground in shared Armenian backgrounds and a passion for sonic explorations in creating music that is claimed to be "completely new."
There is a hidden track on the album Toxicity by System of a Down (right after the song "Aerials"), where Arto contributed, with the band playing a traditional Armenian Church hymn, Der Voghormya (Lord Have Mercy). This track is commonly known as Arto, seeing as he was a significant part of it. He also played the instrumental part of "Science" in the same album, and his voice can be heard a couple of times in the interlude of "Bubbles", from Steal This Album!
In 2007 he formed Yash-ar with fellow Turkish-Armenian rock artist Yaşar Kurt. Yash-ar is made up of first part of his and Yaşar Kurt's first names.