Before Pink Floyd became (deservedly) famous in the mid-70's for Dark Side Of The Moon, Wish You Were Here, and later for The Wall, they were a different band--they were Syd Barrett's band. Instead of the epic, moody, atmospheric, trippy rock forged primarily by the synergy of Roger Waters and David Gilmour later on in Pink Floyd's existence, The Piper at the Gates of Dawn finds the band making music that is very much of its time (1967). The music that became known as "psychedelic" is loosely defined as music that combines creative sonic textures and surprising sounds with bizarre, often whimsical lyrics to either simulate or enhance a drug experience. With the Beatles just down the hall in Abbey Road Studios recording Sgt. Pepper's Lonely Hearts Club Band, The Pink Floyd (named after obscure American blues men Pink Anderson and Floyd Council) were on the cutting edge of the British psychedelic scene while recording The Piper at the Gates of Dawn. (Amazon review)
This debut still endures today as a classic of its genre, thanks to Syd Barrett's unique vision and inimitable songwriting.