title for "McGoohan's Blues" was a reference to actor Patrick McGoohan, who had starred in the UK TV series The Prisoner two years earlier). The track "Sergeant Sunshine" would also appear on Son of Gutbucket, a 1969 sampler album released to promote artists on the Liberty Records label. During this period Harper also visited the Dolphin Club in Oslo, Norway, where he became acquainted with folk singer Lillebjørn Nilsen. Nilsen learned one of Harper's songs, "On the First Day of April", which he translated to "Ravn Ferd" and recorded for his debut solo album Tilbake in 1971. Harper and Nilsen along with Finn Kalvik performed together on 23 January 1970 at a concert held in the University of Oslo. Harper's visit coincided with the emergence of the Norwegian 'folk music wave' (Visebølgen) and the Norwegian Broadcasting Corporation (NRK) recorded Harper on the occasion of the concert. Kalvik would later go on to record Norwegian versions of two Harper songs; "I Hate the White Man" ("Den hvite mann") and "Don't You Grieve" ("Kjære ikke gråt"). 1970–80: The Harvest years With Harper's reputation growing, Pink Floyd's former manager Peter Jenner signed him to a long-term (and at times confrontational) deal with EMI's 'underground' subsidiary, Harvest Records. Over a ten-year period, Harper recorded eight albums at the Abbey Road Studios for the Harvest label and for much of this period was managed and produced by Jenner, initially acting for Blackhill Enterprises. According to Jenner, Harper's first tour of the United States followed the release of his fourth studio album, Flat Baroque and Berserk. The album included the track "Another Day", a song destined to be performed live by Harper for many years to come, and covered by several other artists including This Mortal Coil (featuring Elizabeth Fraser on vocals) and Kate Bush. The album also featured the Nice on the track "Hell's Angels"; its ethereal sound achieved by a wah-wah pedal attached to Harper's acoustic guitar. After the Bath Festival of 1970, Led Zeppelin paid tribute to Harper with their version of the traditional song "Shake 'Em on Down". Retitled "Hats Off to (Roy) Harper", it appeared on the album Led Zeppelin III. According to Jimmy Page, the band admired the way Harper stood by his principles and did not sell out to commercial pressures. In mutual appreciation of their work, Harper would often attend live performances by Led Zeppelin over the subsequent