Dangerous Relations was performed and recorded by Kingfish.
Jerry Garcia plays on the version that is included on the A Wing And A Prayer album.
Writing credits on A Wing And A Prayer are just Matthew Kelly. Other releases have Matt Kelly / Bill Cutler.
Recordings
A Wing And A Prayer, Matt Kelly, 1985 The Relix Sampler, Various Artists, 1985 Relix Sampler (Europe), Various Artists (Matt Kelly), 1993 Relix's Best Of Kingfish, Kingfish, 1997 Dead Delites, Vol. 4, Various Artists (Matt Kelly), 2000