For a killer road movie soundtrack, you can't beat Jim Jarmusch's Broken Flowers. Don (Bill Murray) reluctantly tracks down old girlfriends, to solve a mystery more compelling to his Ethiopian neighbor (Jeffrey Wright) than to him. In fact, it's Winston who more or less puts the whole trip together, from looking up addresses, to renting the cars and printing out the maps, to making the CD Donnie plays as he none too excitedly drives from one encounter to the next. The music on the CD is Ethiopian jazz, mostly by Mulatu Astatke and his band. And it's great.
The trailer gives you a taste of Mulatu Atake before segueing to a fine Holly Golightly song. Watch the whole thing on Netflix instantly. Get the soundtrack! (You can also watch The Trip on Netflix.)