Not exactly upbeat, but "Wish You Were Here" by Pink Floyd. Best ballad IMHO.
Or, to get in that 'trance' state, maybe "Shine on You Crazy Diamond."
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Was in the middle of shooting league the other night (hitting the 5th ball of my 7ball run- unusual for me) and some goon played "Werewolves of London" by Zevon... had to fight the urges to bust out in laughter, puke, and twirl my, err, 'Balabushka.' Hehe.