As Desirée in Broadway musical A Little Night Music, based on the Ingmar Bergman film Sommernattens Leende ('55). Stephen Sondheim also wrote the lyrics to West Side Story.
Judy Collins [hit US and in '15 with Don McLean]
Frida [ABBA girl solo as Var Är Min Clown]
Van Morrison [in film A Little Night Music]
Mike Burstyn [in film Sabine]
Van Morrison & Chet Baker [at Ronnie Scott's]
Krusty The Clown & Sideshow Mel [in The Simpsons episode Krusty Gets Kancelled]
Hubert Van Hoof [on his own Hootenanny]
Jan Rot [as Waar Blijft De Lach]
Mart Pellow [ex Wet Wet Wet]
'Send in the clowns' is the key circus expression used when the show cannot go on (or the love relationship for that matter). Became one of the last great Broadway standards.