What is the name of that song on Scrubs?

This song does not have lyrics. It's a guitar instrumental. This song occurs on the episode Their Story when Ted is in his fantasy and is having trouble deciding what conditioner to wear. This song also occurs on the episode My Mirror Image when Donna (his half-acre next door neighbor) is beating up JD after he practically tells Donna's husband about her affair in front of them. If you don't know the name of the song, then can you tell me a likely place to download it legally?