Premise: Houses of the Holy is the fifth studio album by the English rock band Led Zeppelin , released on 28 March 1973 by Atlantic Records . Led Zeppelin were an English rock band formed in London in 1968 . 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 ) . The latter half of their career saw a series of record-breaking tours that earned the group a reputation for excess and debauchery .
Hypothesis: Led Zeppelin were a group.
Label: ENTAILMENT