When you sit down and think about what rock 'n' roll music really is, then you have to change that question. Played up-tempo, you call it rock 'n' roll; at a regular tempo, you call it rhythm and blues.

When you sit down and think about what rock 'n' roll music really is, then you have to change that question. Played up-tempo, you call it rock 'n' roll; at a regular tempo, you call it rhythm and blues.