We kind of crossed over while i was posting.. I found this.. Though It's not unusual to find artist impersonators on the original circuit.
There was once a Tom Jones tribute singer part timing in the Heavy metal band "Cloven hoof."...
"Electro Velvet are comprised of a Mick Jagger impersonator and a woman who didn’t make it past the first round of BBC1 show The Voice, and Still in Love With You sounds like a nightmarish (and unnecessarily long) effort to fuse the DNA of Cotton Eye Joe, the 1994 song Doop by Doop and the collected works of Scatman John into a monstrous new form,"