Yeah, music in Divine Divinity is more memorable. The 4 seasons singing one is good;

http://www.youtube.com/watch?v=qkb-450Av8M

I remember I first heard it when some random merchant came up to me and I started trading with him as this music played in the background.

Divinity 2 has great music too, Broken Valley's music is great.

Let's Play Divine Divinity - The Damned One's Tale - Chapter II.