Gibb founded the Bee Gees in the late 50s. They achieved minor success in the 60s and early 70s, and briefly parted way. It wasn't until the late 70s that that they began to experiment with the "Disco" sound that was gaining popularity as an underground genre in the U.S.
They agreed to participate in creating a few tracks that would be used in an upcoming film, "Saturday Night Fever". That turned out to be the "life changer" in their career. The impact of the film and the music soundtrack catapulted them to world-wide fame and success. It basically brought Disco to the mainstream.
Some of their most memorable tracks in this period were "Stayin' Alive", "Night Fever", "More than a woman", and "How deep is your love".
R.I.P. Robin Gibb
