Artist appearances at Extrema concerts

No artists have performed a song with Artist: Extrema (d78ef2ba-66a9-4f5c-8b75-1519647283d2) on stage yet. Have you seen an artist hitting the stage at a Artist: Extrema (d78ef2ba-66a9-4f5c-8b75-1519647283d2) concert? Add or edit the setlist and help improving our statistics!