Artist appearances at Optimus concerts

No artists have performed a song with Artist: Optimus (4024ee35-c3ee-4a98-9309-bc236440bb8e) on stage yet. Have you seen an artist hitting the stage at a Artist: Optimus (4024ee35-c3ee-4a98-9309-bc236440bb8e) concert? Add or edit the setlist and help improving our statistics!