RARE FOUR SEASONS PROMO 45 RPM VINYL RECORD
THE WONDER WHO? (*aka The Four (4) Seasons, Franki Valli) 45 RPM VINYL RECORD WITH PICTURE SLEEVE

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The Wonder Who?  45  Don't Think Twice
Label:Philips ‎– 40324
Format:Vinyl, 7", 45 RPM, Single 
Country:US
Released:1965
Genre:Rock
Style:Pop Rock

Tracklist  
A Don't Think Twice
Arranged By, Conductor – Calello*
Written-By – Bob Dylan
2:57
B Sassy
Written-By – B. Crewe/B. Gaudio*
2:12
Companies, etc.
Record Company – Mercury Record Corporation
Published By – M. Witmark & Sons
Credits
Producer – Bob Crewe

"Don't Think Twice"/"Sassy" 
Philips 40324, released October 1965. "Don't Think Twice" was originally recorded by composer Bob Dylan (as "Don't Think Twice, It's All Right") on his 1963 album, The Freewheelin' Bob Dylan. Peter, Paul, and Mary released the most commercially successful version of the song in September 1963. It reached #9 on the Hot 100 singles chart. The "Wonder Who?" version peaked at #12 in December 1965.

"Sassy" was an original instrumental by the Four Seasons. Composing credit was given to Bob Gaudio and Bob Crewe.

more...
The Wonder Who? was a nom de disque of The Four Seasons for four single records released from 1965 to 1967.  It was one of a handful of "names" used by the group at that time, including Frankie Valli (as a "solo" artist even though the Four Seasons were present on the record) and The Valli Boys. Wonder Who? recordings generally feature the falsetto singing by Valli, but with a softer falsetto than on "typical" Four Seasons recordings.
Notes
Side A published by M. Witmark & Sons (ASCAP).