Complex sentence: "Too Much Heaven" is a song by The Bee Gees, which was first a donation to the "Music for UNICEF" fund, and later found its way to the group's twenty-second album, "Spirits Having Flown".
Split into simpler sentences: Too Much Heaven is a song by The Bee Gees, which was the band's contribution to the "Music for UNICEF"fund. The song later found its way to the group's twenty-second album, "Spirits Having Flown".