Conversation so far:
What type of music did the Beatles have with the album Sgt. Pepper's Lonely Hearts Club Band?
An important work of British psychedelia, the album incorporates a range of stylistic influences, including vaudeville, circus, music hall, avant-garde, and Western and Indian classical music.
How many albums did The Beatles have?
In their native United Kingdom, between 1962 and 1970, the Beatles released 12 studio albums (13 worldwide), 13 extended plays (EPs) and 22 singles.
Were there any hit singles in Sgt. Pepper's Lonely Hearts Club Band?
What was important about the lyrics from Sgt. Pepper's Lonely Hearts Club Band?
Concerns that some of the lyrics in Sgt. Pepper refer to recreational drug use led to the BBC banning several songs from British radio.
How many of the songs from the album Sgt. Pepper's Lonely Hearts Club Band were banned?

Question: Were mostly all of the songs dealing with recreational drug use?
Self-contained rewrite: Were mostly all of the songs on Sgt. Pepper's Lonely Hearts Club Band dealing with recreational drug use?