Try Lithuania, they seem to be stuck in the 80s. For reference: Most streamed song currently is Blinding Lights by The Weeknd.

EDIT: Malaysia (Stuck with U by Ariana Grande) is an option too. Thailand (คิด(แต่ไม่)ถึง by Tilly Birds) also and Japan (夜に駆ける by YOASOBI) never lets you down, of course.