In Search of the Lost Chord peaked at #23 on the US album charts upon its release in July 1968.[4] It reached #5 in the UK. Neither of the two singles from the album, "Ride My See-Saw" nor "Voices in the Sky", charted in the top 40 on the Billboard charts, although the latter reached #27 on the UK singles chart.In Search of the Lost Chord is A Concept album around a broad theme of quest and discovery, including world exploration, music and philosophy through the ages lost love , spiritual development , knowledge in a changing world higher consciousness , imagination and space exploration .