"So Rare" is a popular song published in 1937 by composer Jerry Herst and lyricist Jack Sharpe. It became a hit for Jimmy Dorsey in 1957. The version by Carl Ravell and his Orchestra, from a session on 4 June 1937, was the earliest recording of the song, although it is unclear whether it was the first released version. The earliest popular versions of "So Rare" were the 1937 releases by Guy Lombardo and his Royal Canadians and by Gus Arnheim and his Coconut Grove Orchestra. Less than two months after "So Rare" became a hit, Jimmy Dorsey died from lung cancer.