High Quality Content by WIKIPEDIA articles! The Serendipity Singers were a 1960s American folk group, similar to The New Christy Minstrels. Their debut single "Don`t Let the Rain Come Down (Crooked Little Man)" was a Top Ten hit and received the group`s only Grammy nomination in 1965. The majority of the group`s recording sales took place in a two year period of 1964 and 1965. The group`s name was sold in the 1970s resulting in entirely new lineups of group members performing under the name The Serendipity Singers into the early 21st Century.