Today in 1970 the U.S. branch of Atlantic Records released the Led Zeppelin single “Immigrant Song” / “Hey Hey What Can I Do” from their Led Zeppelin III album. Original pressings of the single have the Aleister Crowley quote “Do What Thou Wilt Shall Be The Whole Of The Law” etched into in the trail-off on the A-side. [This was the only Led Zeppelin single to include any kind of trail-off inscription.]
Immigrant Song – The lyrics reflected Plant’s continuing interest in things Celtic and mystical. The piece begins with an attention-grabbing hiss (an echo unit feedback) before kicking into Page’s and Bonham’s hammering intensity. The riff turned out to be one of Zeppelin’s most powerful.
Hey Hey What Can I Do – This is Led Zeppelin’s only non-album track released during the band’s existence. It was released in 1970 as the B-side of “Immigrant Song” outside the UK, and within the UK it appeared on the 1972 Atlantic Records various artists LP, The New Age of Atlantic. Before inclusion on the 1990 4-CD box set, these were the only two places the track could be found. It was also released as a cassette single in 1990, and as a CD single in 1992. It’s a nice piece filled with strumming mandolins and acoustic guitar, with Plant singing in a lower key than usual. It has a west-coast sound, and it fades out in some chaos, which might suggest it was a trial run for a song weeded during the final album-selection process.