I tested the playlists in-game. Thing is, I had to go into the Divinity Editor and change each song manually, then open the Divinity Original Sin game and listen to one song play during character creation and a second song play during the game's start point. So I suppose it is possible that the Char Gen playlist continued into the start of the game. But I thought I heard the song switch...

Well, damn. That means what I heard was probably Tavern_new and for some reason Larian has 3 very different music tracks cycling in that one playlist... one sounding like Alvin and the Chipmunks which I really don't want in my game.