"Fiddler On The Roof" debuts on Broadway 1964

Fiddler on the Roof, a musical by Jerry Bock and Sheldon Harnick, made its Broadway debut September 22, 1964. It is based on Tevye and his Daughters and other tales by Sholem Aleichem.  

It was the first musical to surpass 3,000 performances and held the record for the longest-running Broadway musical for 10 years until Grease surpassed it. It was nominated for 10 Tony Awards and won 9.

Zero Mostel played Tevye and Bea Arthur appeared as the matchmaker Yente.

Frankie Valli's "Grease" reaches #1 1978

Grease, the title song for the movie Grease, reached #1 on the Billboard Hot 100, August 26, 1978 and stayed there for two weeks.  Barry Gibb wrote the song and Frankie Valli performed it. 

It was one of four original songs not part of the original musical, and it is the only one not performed by the cast.  It reached double platinum status.