That’s been the magic question since the Hall’s inception. Historically, its definition of rock & roll has been very broad, especially when it comes to black artists. Aretha, Ray, and Smokey are all in, despite not being anything near rock & roll, and so are Johnny Cash, Dusty Springfield, Madonna, and Hall & Oates. So I’m not sure why rock-era-but-not-quite-rock legends like Warwick and Parton aren’t included, although they’re as influential as anyone who has been inducted. I purposely left Barbra Streisand off the list because she’s more on the Broadway side of things and, for the most part, her pop work isn’t necessarily Hall of Fame-worthy. Warwick and Parton, though, are huge oversights.