Task: Explanation
Input (English): Egon Bondy's Happy Hearts Club Banned is an album by Czech underground band The Plastic People of the Universe. It was recorded in 1974/75, mainly at Houska Castle, enabled by the castle's then warden Svatopluk Karásek, with some songs being recorded in Prague. The album could not be officially released and distributed under the former Communist regime in Czechoslovakia; instead fans duplicated tapes with one another, often resulting in poor technical quality. It was released in 1978 in France by SCOPA Invisible Production. In the Czech Republic a remastered version was published in 2001 by Globus Music. The album title is a parody of The Beatles' album "Sgt. Pepper's Lonely Hearts Club Band". Most of the songs on the record are settings of poems by Egon Bondy. The author of the album title is Ivan Hartl, a Czechoslovak emigrant living in London. Question: Egon Bondy's Happy Hearts Club Banned is a parody of which 1967 Beatles album? Answer: Sgt. Pepper's Lonely Hearts Club Band
Output (English):  The album title is a parody of The Beatles album Sgt. Peppers Lonely Hearts Club Band.