What shows had particularly good song selections, that introduced you to artists you might otherwise have never discovered?

Sons of anarchy had some really good cover versions of songs (or a specific song I don't remember)

It was very good but rubbed me the wrong way for some weird random reason

Katey Sagal's cover of Bird on a Wire is one of most extraordinary things ever recorded. Tears every time.

Songs of Anarchy is pretty brilliant all around.