Few Norwegian pop groups can present a better debut than what Difference from Trondheim did in 1967. The group shocked their surroundings with the single "Tree of Love". 1967 was the year when flower power, hippies and psychedelica arrived. Albeit unconsciously, none marked this epoch as clearly as Difference. And of course it was in 67 that The Beatles released "Sergeant Pepper's", the Rolling Stones came out with "Their Satanic Majesties Request"