"The '60s generation's coming of age, across 87 mystical tracks: Tracing the UK's response to American jazz, blues and soul, Halcyon Days opens with some finely tuned, though somewhat copycatted efforts: Duffy Power, Zoot Money, Mickey Finn, among others, unlock the dancefloors, Hammond organs aflutter; future superstars - notably, Rod Stewart and David Bowie - take their first steps. By 1967, however, countless underground titans, such as the Creation, John's Children, The Action, had emerged to melt mod into psych with R&B wings. this extensive comp digs far deeper still, unearthing oft-hidden cuts by the virtually unknown".