Swedish progressive metallers OPETH made their live debut with keyboardist Joakim Svalberg (YNGWIE MALMSTEEN, GLENN HUGHES) at the 10th annual Bonnaroo Music And Arts Festival on June 10, 2011 on a 700-acre farm in Manchester, Tennessee, 60 miles south of Nashville.

Fan-filmed video footage of the performance can be seen below. Source: Blabbermouth.net