The musical’s title song begins as character Claude slowly croons his reason for his long hair, as tribe-mate Berger joins in singing they "don't know.

Later the song takes the tune of "The Star-Spangled Banner" with the tribe punning "Oh say can you see/ My eyes if you can/Then my hair’s too short!

"[1][2] The song shows the Tribe's enthusiasm and pride for their hair as well as comparing Claude to a Jesus figure.

[8] "Hair" was also covered in Australia in 1969 and released as a single by Doug Parkinson in Focus (B-side with "Without You") and was a top ten hit for him there that year.

[21] A cover was released as a B-side by girl group Gilded Cage in 1969.