Peaking at number three after entering the UK singles charts on this day in 1967, bested by Scott McKenzie’s “San Francisco” (Be Sure to Wear Flowers in Your Hair) and The Beatles’ “All You Need is Love,” The Small Faces’ “Itchycoo Park” was among the first songs to use the technique called flanging that can be heard in the post-refrain bridges—the swooshing audio effect is produced by mixing two identical signals one with a delay of a few milliseconds that resolves in harmonisation. Classed as psychedelic-pop, the identity of the titular park has been subject to debate, proposals ranging from Manor Park or Wansteads Flats in East London to Little Ilford or Valentine’s Park in Charring Cross—regardless of the location, so nicknamed for the preponderance of stinging nettles. Regarded as “refreshing” and inspired with their other hits “All or Nothing,” “Lazy Sunday” and “Tin Soldier,” The Small Faces’ classic had a 1995 techno version released by M People.