The Sun Aint Gonna Shine

"The Sun Ain't Gonna Shine (Anymore)" is the name of a song written by Bob Crewe and Bob Gaudio. It was released as a single by Frankie Valli in 1965 on the Smash label. The single achieved only limited success, charting on Billboard's Bubbling Under Hot 100 singles chart but not making the Hot 100 itself. Although it was recorded in a Four Seasons recording session with the same producer (Crewe), it was Valli's first official "solo" single in over a decade.
In 1966, The Walker Brothers released their remake as a single. Retitled "The Sun Ain't Gonna Shine Anymore," this version met with much greater success than Valli's. It topped the UK Singles Chart and also became their highest-charting song on the Billboard Hot 100.
http://en.wikipedia.org/wiki/The_Sun_Ain%27t_Gonna_Shine_%28Anymore%29