"I.O.I.O." is a song by the Bee Gees, released on the album Cucumber Castle. It was written by Barry and Maurice Gibb. The song was released as a single in March 1970, and was also one of the highlights of the album. The single was a relative success mainly on European charts. Its music video is taken from the film Cucumber Castle.

Idea is the fifth album by the Bee Gees. Released in September 1968, the album sold over a million copies worldwide. The album was issued in both mono and stereo pressings in the UK. The artwork on the Polydor release designed by Wolfgang Heilemann featured a "beehive" neon lightbulb with a group photo in its base, while the North American ATCO release designed by Klaus Voormann featured a composite head made from each band member. It was their third internationally released album – the first two albums being released only in the Australian market.