The song Blue Again was written by Dorothy Fields and Jimmy McHugh and was first released by Milt Shaw and His Detroiters in 1930.

It has been covered by

Duke Ellington & his Cotton Club Orchestra with Sid Garry
Loring "Red" Nichols & His Orchestra

Louis Armstrong & his Orchestra
https://m.youtube.com/watch?v=4zEOOA...Bsb3Vpcw%3D%3D

Alma Cogan with Geoff Love Orchestra
André Previn & David Rose
The Manhattan Transfer

Blue Again - Jimmy McHugh-Dorothy Fields