Robin Gibb, best known as being one-third of the Bee Gee's, died on Sunday, May 20, after battling cancer.

Gibb is credited as being a co-founder, along with his twin brother Maurice Gibb and older brother Barry Gibb, of the Bee Gee's.

While the trio had an amazingly successful career throughout multiple decades, they are remembered for making their mark on two distinct periods in time: In the late 1960s/early 1970s as a mainstream pop act and in the late 1970s as major players in the disco craze that swept the nation.

Originally from the Isle of Man, the Gibb brothers grew up in Chorlton, Manchester, England, but began their musical careers after having moved to Australia in the late 1950s.

The Bee Gee's achieved their first chart success in Australia with Spicks and Specks and eventually moved back to the UK where they would form a relationship with music producer Robert Stigwood. Stigwood would play a key role in promoting the Bee Gee's to a worldwide audience.

It has been estimated that the Bee Gees' career record sales total more than 220 million, making them one of the best-selling music artists of all time.

A known rivalry between Robin Gibb and Barry Gibb eventually prompted Robin to leave the group and begin a solo career.

Robin Gibb's solo career first gained traction with a number 2 UK hit, Saved by the Bell, which sold over one million copies, and received a gold disc.

However, Gibb's first solo album, Robin's Reign, was less successful and he soon found that being a solo artist was unsatisfying.

Despite having almost completed a second solo album, Sing Slowly Sisters, Gibb reunited with his brothers, who then revived the Bee Gees.

While still completing projects with the Bee Gees, Robin Gibb also promoted his new solo career. During the 1980s, Gibb released three solo albums: How Old Are You? Secret Agent and Walls Have Eyes.

The Bee Gee's were inducted into the Rock and Roll Hall of Fame in 1997. The presenter of the award to Britain's first family of harmony was Brian Wilson - lead singer of the Beach Boys, a family act also featuring three harmonizing brothers.

According to the Bee Gees' Hall of Fame citation, Only Elvis Presley, The Beatles, Michael Jackson, Garth Brooks and Paul McCartney have outsold the Bee Gees.

Following Maurice's sudden death in January 2003, the Bee Gee's finally called it quits with Barry and Robin Gibb retiring the group's name after 45 years of activity.

In 2009, however, Robin announced that he and Barry had agreed that the Bee Gees would re-form and perform again.

Robin Gibb was 62-years-old when he died after a battle with cancer.

Click Start to check out photo's of Robin Gibb's incredible career with the Bee Gee's.