"Concrete and Clay" was a surprise hit, reaching the UK Top 20 despite its unusual arrangement and lyrical themes.
- The single reached number 10 on the UK Singles Chart in March 1965.
- The arrangement featured a prominent string section, unusual for a garage rock single at the time.
- The song was Unit 4 + 2's most successful single, eclipsing their previous releases and future efforts.
Unit 4 + 2 was a British rock band. They were part of the 1960s beat music scene.
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