In the summer of 1966, Yardbird Paul Samwell-Smith left the group to pursue a career as a record producer - his replacement was studio session guitarist Jimmy Page. With Page in the fold, the band began to explore heavier, more progressive sounds. 'Happenings Ten Years Time Ago' is the finest example of this, fully showcasing the dual-lead guitar line up of Jimmy Page and Jeff Beck in 'a full on six-string apocalypse'. Whilst the single was not a commercial success at the time of release, it has since been recognised for its pioneering sound and appears at number three on Record Collector's list of the '100 Greatest Psychedelic Records'. It's lasting influence has been far-reaching, inspiring artists including Jimi Hendrix, Syd Barrett, The Stooges, Sparks, Todd Rundgren, and Mudhoney. The B-side features 'Psycho Daisies', another dose of the Yardbirds firing on all cylinders with explosive bursts of guitar. Clocking in at just under two minutes, 'Psycho Daisies' is a proto-punk gem and would be the final appearance of Jeff Beck on record with the Yardbirds.