Artist appearances at Countdown concerts

No artists have performed a song with Artist: Countdown (b748ae7c-34dc-4370-b7f8-03c97bebea24) on stage yet. Have you seen an artist hitting the stage at a Artist: Countdown (b748ae7c-34dc-4370-b7f8-03c97bebea24) concert? Add or edit the setlist and help improving our statistics!