Artist appearances at Optimisti concerts

No artists have performed a song with Artist: Optimisti (65ba226c-7334-442f-b5ef-976acd6b7921) on stage yet. Have you seen an artist hitting the stage at a Artist: Optimisti (65ba226c-7334-442f-b5ef-976acd6b7921) concert? Add or edit the setlist and help improving our statistics!