Nick Gravenites is an American blues, rock and folk singer, songwriter, and guitarist, best known for his work with Electric Flag, Janis Joplin, Mike Bloomfield and several influential bands and individuals of the generation springing from the 1960s and 1970s. He has sometimes performed under the stage names Nick "The Greek" Gravenites and Gravy.

Janis Lyn Joplin was an American singer and songwriter. One of the most successful and widely known rock performers of her era, she was noted for her powerful mezzo-soprano vocals, as well as her "electric" stage presence.