Rolling Stone reports that veteran producer, singer and songwriter for the legendary Four Seasons, Bob Crewe, passed away just yesterday, Thursday, Sept. 11, at the age of 82.

Crewe notably wrote a number of the band's hits, ones that still remain legendary and iconic in their own right today –– songs such as "Sherry," "Walk Like a Man" and "Big Girls Don't Cry."

He took the world by storm when he co-wrote the favorite "Can't Take My Eyes Off You" for the one and only Frankie Valli, who was the once-upon-a-time frontman for the Four Seasons.

Crewe also reportedly penned songs for Roberta Flack, Peabo Bryson and the King of Pop, Michael Jackson.

On top of the slew of hits he wrote for the Four Seasons, Crewe is the one responsible for writing Patti Labelle's 1974 smash "Lady Marmalade," which was eventually covered by Christina Aguilera, Pink, Lil Kim and Mya

Having begun his career as a singer and producer back in the 1950s, Crewe found himself writing for other artists more than singing. He then recorded two albums himself, however, in 1961, which earned him some serious attention along with Ricky Nelson and Paul Anka.

According to the Miami Herald, the musician's brother Dan had the late songwriter transferred to a nursing home after being unfortunately diagnosed with dementia. Jonathan Hadley, the man who played Crewe in the Jersey Boys Broadway stage play, told the Herald back in 2012 that Crewe "was responsible for that signature Four Seasons sound. He's an unsung hero."