Question: Gregg Rolie and Rob Tyner, are a keyboardist?
Related documents: [0]  [DOC] Robert W. Derminer (December 12, 1944 – September 18, 1991), known as Rob Tyner, was an American musician best known as lead singer for the Detroit proto-punk band, MC5. His adopted surname was in tribute to the jazz pianist McCoy Tyner. It was Tyner who issued the rallying cry of "kick out the jams, motherfuckers" at the MC5's live concerts. Tyner had originally auditioned as the bass player, but the band felt his talents would be best used as a lead vocalist. [END] 
[1]  [DOC] Gregg Alan Rolie (born June 17, 1947, Seattle, Washington, United States) is an American singer and keyboardist. Rolie served as lead singer of the bands Santana, Journey and Abraxas Pool – all of which he co-founded. He also helmed rock group The Storm, and currently performs with his Gregg Rolie Band. Rolie is a two-time inductee of the Rock and Roll Hall of Fame, having been inducted both as a member of Santana in 1998 and as a member of Journey in 2017. [END] 
Answer: 
no
no