Tony Award winner Glynis Johns originated "Send In the Clowns" when she played Desiree in the Stephen Sondheim 1973 musical "A Little Night Music". It's said that he wrote the song specifically for the beguiling singer, stage and screen actress.
Judy Collins recorded the hit cover in 1975, it's on her album "Judith" reaching into the top forty. Again it was issued in 1977 this time getting into the top twenty. At the 1976 Grammys it won Song of the Year.