I should like to add (Also Black Pantera is so awesome)
Stilletto (Glam Metal - I haven't been able to find them on Spotify so EP on youtube)
Mother's Finest (Funk Glam Metal)
People's Choice (Funk rock)
Straight Line Stitch (Nu Metal)
Grace Jones (Disco, Reggae, Rock)
Buddy Miles (Blues, Funk Rock)
Robert Cray (Blues) and the Robert Cray Band
Chaka Khan (Soul, Blues, Rock)
Body Count (Thrash Rap/Rap Metal)
Ghost Hounds (Country Rock Blues)
Thin Lizzy (Hard Rock/Classic Heavy Metal)
Zulu (Nu Metal/Death Metal)
Suicidal Tendencies (Heavy Metal)
Keb'Mo' (Country Influenced Blues)
Overthrust (Doom/Death Metal)
Arka'n Asrafokor (Death influenced Folk Metal)
Dividing The Element (Death influenced Folk Metal)
Fishbone (Ska, Funk, Punk, Rock)
Living Color (Funk Metal)
Prophets of Rage (Punk Rap Metal Supergroup)
Wrust (Thrash/Death Metal)
Vale of Amonition (Death? Doom? Nu Metal)
April Kae (Bassist and singer)
A Band Called Pain (Blues Rock, Blues Grunge?)
Shemekia Copeland (Blues)
Skinflint (Folk influenced Heavy Metal)
Cypress Hill (Rock influenced Hip Hop)
George Clinton and Parliment Funkadelic (Funk)
Ida Corr (Dance, Electronica, Disco Influenced)
War (Classic Rock, Reggae Rock)
Or bands like Guns N Roses with Slash (Or Velvet Revolver or Slash's Snake Pit) or Warrior Soul with Johnny Ricco or Sepultura with Derrick Green? Or David Bowie with Gail Ann Dorsey or Bruce Springsteen and Clarence Clemons or Terrance Hobbs in Suffocation? OR WIlliam DuVall in Alice in Chains? Or Lajon in Sevendust?