Premise: Led Zeppelin . Although the group was initially unpopular with critics , they achieved significant commercial success with albums such as Led Zeppelin ( 1969 ) , Led Zeppelin II ( 1969 ) , Led Zeppelin III ( 1970 ) , Led Zeppelin IV ( 1971 ) , Houses of the Holy ( 1973 ) , and Physical Graffiti ( 1975 ) . Led Zeppelin is the eponymous debut studio album by English rock band Led Zeppelin , released on 12 January 1969 in the United States and on 31 March 1969 in the United Kingdom by Atlantic Records . Featuring integral contributions from each of the group 's four members , the album was recorded in October 1968 at Olympic Studios in London and established their fusion style of both blues and rock music .
Hypothesis: Led Zeppelin played music.
Label: ENTAILMENT