Artist appearances at Mr Showdown concerts

No artists have performed a song with Artist: Mr Showdown (d32dbed4-2178-460c-89f4-4dce717ceb24) on stage yet. Have you seen an artist hitting the stage at a Artist: Mr Showdown (d32dbed4-2178-460c-89f4-4dce717ceb24) concert? Add or edit the setlist and help improving our statistics!