Aimee Mann's "Deathly", from the Magnolia soundtrack, has a solo that is simple, haunting, and at times blistering. It repeats after each chorus, getting bigger each time. So, so good. Makes my eyes well up. The credit for the solo(s) is shared by Michael Lockwood and Patrick Warren, though I have a feeling that Jon Brion had something to do with how amazing that solo is, as he produced the song.
