In February 2006, Mike Patton performed an operatic piece composed by Eyvind Kang, based on the 1582 work "Cantus Circaeus" by Giordano Bruno, at Teatro Comunale di Modena in Modena, Italy. Patton sang alongside vocalist Jessika Kenney, and was accompanied by the Modern Brass Ensemble, Bologna Chamber Choir, and Alberto Capelli and Walter Zanetti on electric and acoustic guitars. The singer remarked that it was extremely challenging to project the voice without a microphone. This performance was later released as the record "Athlantis" in July 2007, through Ipecac Recordings.