Former EMPEROR frontman Ihsahn (real name: Vegard Sverre Tveitan) joined DEVIN TOWNSEND PROJECT on stage yesterday (Saturday, August 6) at the Vagos Open Air festival in Lagoa de Calvo (GDC), Portugal to perform the song "Juular". Fan-filmed video footage of his appearance can be viewed below.The studio version of "Juular", featuring Ihsahn on guest vocals, can be found on "Deconstruction", the third in a series of albums to be made available under DEVIN TOWNSEND PROJECT moniker, which came out on June 21 (one day earlier internationally) via InsideOut Music. Ihsahn previously stated about his collaboration with Townsend, "I have been a longtime fan of Devin and his work, and when he asked me to do some vocals for his 'Deconstruction' album, I said yes right away. "Devin is one of those few uncompromising artists who goes anywhere with their music, wherever that takes them. Nothing but respect!" "Deconstruction" and "Ghost" complete Devin's tetralogy album concept a great journey through Townsend's different states of musical moods which he started in 2009 with the albums "Addicted" (2009) and "Ki" (2009).