Artist appearances at Optimus concerts

No artists have performed a song with Artist: Optimus (b3fac59f-a78e-4fbb-8deb-683f4d919e6c) on stage yet. Have you seen an artist hitting the stage at a Artist: Optimus (b3fac59f-a78e-4fbb-8deb-683f4d919e6c) concert? Add or edit the setlist and help improving our statistics!