Rich, no, neither of those groups were one-hit wonders. The Duprees also did "My Own True Love" and "Have You Heard," among others.
And The Crests, with Johnny Maestro, did "Step By Step," "The Angels Listened In," "Trouble In Paradise," and others. For example, here’s Johnny performing "Step By Step" as a member of The Crests: https://www.youtube.com/watch?v=E284QNyoJug
All of these were solid top-40 hits.
Regards,
-- Al
And The Crests, with Johnny Maestro, did "Step By Step," "The Angels Listened In," "Trouble In Paradise," and others. For example, here’s Johnny performing "Step By Step" as a member of The Crests: https://www.youtube.com/watch?v=E284QNyoJug
All of these were solid top-40 hits.
Regards,
-- Al