Gary Moore and Friends

Phil Lynott, Scott Gorham, Cozy Powell, and Gary Moore.

This Phil Lynott ballad was sped up by Brian Robertson for Thin Lizzy's Johnny The Fox (1976) album.  Gary Moore would revive it's original softer sound for his 1979 solo album Back on the Streets.  The above Old Grey Whistle Test performance is the definitive version.  Watch at 2:40 when the twin Les Pauls let loose.  Mercy!