Rich Firestone writes…
You know, "The Four Seasons" still confuses me, because as I recall, when those guys started, there were four guys onstage, including Frankie. There's even an album cover showing the band lifting Frankie up on a silver platter, and one of the four guys lifting Frankie…is Frankie! I assume Frankie got a promotion, or the others got demoted at some point, but it still seems weird to see five guys on stage at a Four Seasons show!
I'm no expert on this — and it's been a while since I saw Jersey Boys — but my understanding is that at some point, Mr. Valli went solo and was replaced in The Four Seasons…and then there were bookings where it was advantageous to have him perform with that group. So it was like a former member of The Four Seasons performing with the current roster of The Four Seasons.
Certainly if I am wrong about this, I will have eighty e-mails by Noon telling me so.