"As We Go Along" has always been one of my favorite Monkees songs. Written by Gerry Goffin and Carole King and featuring a stellar Micky Dolenz lead vocal, the mix of the track that appeared in Head is unique to the film's soundtrack and has never been available elsewhere. Note the highly reverbed guitar notes during the intro of the song. Multiple guitarists are featured throughout the recording, including Neil Young.
"As We Go Along" was issued in another mix as the B-side to "Porpoise Song" in October 1968, ultimately becoming the lone single from the Head soundtrack.