I'll Remember April  Music by Gene Depaul, lyrics Don Raye. They also wrote another fine song ' You don't know what love is:   Both are popular with jazz singers and instrumentalist; Sinatra does I'll Remember April and Sting and trumpeter perform You Don't Know what love Is a very soulful song, not a true classic blues but drenched in the feeling of the blues.

 sINATRA

https://youtu.be/pepYluyez4k 

Sting &Chris Botti

https://youtu.be/u0asEjkDyvE