The term 'HAIR SONG' can be broken down into two crossword solutions: AIR (3 letters) and AQUARIUS (8 letters). AIR is a song by the band The Prodigy, released in 1996 as part of their album The Fat of the Land. It was a major hit in the UK and Europe, reaching number three on the UK Singles Chart. AQUARIUS is a song from the musical Hair, written by Galt MacDermot, James Rado, and Gerome Ragni. It was released in 1969 and became a popular anthem for the counterculture movement of the 1960s.