'makeout' music.

[Vladv1]

"The Commodores, too, have their disco‐dance numbers. But this group's principal appeal would seem to be its ability to come up with classy 'makeout' music".
The source "The Pop Life". The New York Times. August 24, 1979.
What is makeout music?

 

[probus]

Making out has very many synonyms, a testament no doubt to its huge popularity : necking, smooching, heavy petting, snogging, canoodling, and probably others.

 

[emsr2d2]

The kind of music that makes you want to kiss and cuddle with your romantic partner. UE has a great Phrasal Verbs page - you'll find "make out" HERE. "Makeout/make-out" is the associated noun.