You must check out Ella Fitzgerald's "Night And Day"

My suggestions for others:

Frank Sinatra "I'll Never Smile Again"
Glenn Miller "In the Mood"
Les Brown w/Doris Day "Sentimental Journey"
Andrews Sisters "Rum and Coca-Cola"
Johnny Mercer "On the Atchison, Topeka and Santa Fe"
Les Brown w/Doris Day "My Dreams are Getting Better all the Time"

Kitty Wells' "Makin' Believe" is great, if you're into honky tonk.