DION: (Singing) We said we'd walk together, baby, come what may, that come the twilight, should we lose our way, if as we're walking a hand should slip free, I'll wait for you, and should I fall ...

This is FRESH AIR. I'm Terry Gross. Today, we conclude our archive series, R&B, Rockabilly and Early Rock 'n' Roll, with Allen Toussaint, who we'll hear from later and Dion. If you've ever dismissed ...