Taking the name Bee Gees, an abbreviation of Brothers Gibb, the group signed to the Australian label Festival Records and released a series of singles written by Barry while in their teenage years. They moved back to England in the late 1960s to further their pop career.
Their first UK track, New York Mining Disaster 1941, was released in mid-1967. It made the top 20 on both sides of the Atlantic. But the group's first major hit was the chart-topping single Massachusetts.
In 1968, Robin married girlfriend Molly Hullis and the couple went on to have two children together; Spencer born in 1972 and Melissa born in 1974. Robin and Molly divorced in 1980.