Do you know what's groovy?

I am a Jo Stafford fan. I am a Johnny Mercer fan. They were fans of one another.

"Conversation While Dancing" is on Disc Two of Yes, Indeed, a four-CD collection of Jo Stafford songs. It's a duet with Johnny and Jo. He sings (lyrics that he wrote):
Do you know what's groovy?
Have you seen the latest movie?


Groovy?! This record is from 1943. I thought "groovy" was a word firmly stuck in the 1960s. In this discussion of the long-lastingness of "cool" and the datedness of "groovy" we learn:
Groovy, despite a similar origin, has had a markedly different sociolinguistic history. The word is first recorded in the 1930s; it's derived from the phrase in the groove. Groovy was heavily used throughout the 1940s and 1950s, especially by jazz musicians. But the popular perception now ties it to the late 1960s, where it is considered one of the characteristic words of the hippie movement.  
If groovy was good enough for Johnny and Jo, it's good enough for me. Ain't they cute?