The musical – about Frankie Valli and the Four Seasons – features a book by Marshall Brickman & Rick Elice, with music by Bob Gaudio, lyrics by Bob Crewe.
Spector will once again play Frankie Valli beginning October 2, taking over from original, Tony Award-winning cast member John Lloyd Young, who plays his final performance on September 30.
Gehling will replace Quinn VanAntwerp as Bob Gaudio on October 9, the same day that the previously reported Jeremy Kushnier takes over from Andy Karl as Tommy DeVito.
The current cast also includes Matt Bogart as Nick Massi, along with Peter Gregus, Mark Lotito, Miles Aubrey, Jared Bradshaw, Cara Cooper, Ken Dow, John Edwards, Russell Fischer, Kristofer McNeeley, Katie O'Toole, Joe Payne, Jessica Rush, Dominic Scaglione Jr., Nathan Scherich, Sara Schmidt and Taylor Sternberg.
