This exclusive performance by The Manhattan Transfer of "Route 66", one of their classic signature tunes, can be found on their DVD, "35th Anniversary - Great American Songbook". It also features new studio recordings and in depth interviews from sessions at the legendary Henson Studios in Los Angeles.

The Manhattan Transfer is a jazz vocal group founded in 1969 that has explored a cappella, vocalese, swing, standards, Brazilian jazz, rhythm and blues, and pop music. There have been two editions of the Manhattan Transfer, with Tim Hauser the only person to be part of both. (Wikipedia)