"So Rare" is a popular song published in 1937 by composer Jerry Herst and lyricist Jack Sharpe.

[2][3] 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.

[4][5] Before it had been recorded or even published, Fred Astaire had sung "So Rare" on his radio show The Packard Hour.

[6] This was the recollection of Jess Oppenheimer, then a writer for the show, who recommended the song on behalf of his friend Jerry Herst, then an "aspiring songwriter".

Credited on the label to "Jimmy Dorsey with Orchestra and Chorus",[14] the vocals are by the Artie Malvin Singers.