"Bohemian Rhapsody" is a song by the British rock band Queen. It was written by Freddie Mercury for the band's 1975 album A Night at the Opera. It is a six-minute suite, consisting of several sections without a chorus: an intro, a ballad segment, an operatic passage, a hard rock part and a reflective coda. The song is a more accessible take on the 1970s progressive rock genre.

A rapid series of rhythmic and harmonic changes introduces a pseudo-operatic midsection, which contains the bulk of the elaborate vocal multi-tracking, depicting the narrator's descent into hell. While the underlying pulse of the song is maintained, the dynamics vary greatly from bar to bar, from only Mercury's voice accompanied by a piano to a multi-voice choir supported by drums, bass, piano and Timpani. The choir effect was created by having May, Mercury, and Taylor repeatedly sing their vocal parts, resulting in 180 separate overdubs. These overdubs were then combined into successive submixes. According to Roger Taylor, the voices of May, Mercury and himself combined created a wide vocal range: "Brian could get down quite low, Freddie had a powerful voice through the middle, and I was good at the high stuff." The band wanted to create "a wall of sound, that starts down and goes all the way up". The band used the bell effect for lyrics "Magnifico" and "Let me go". Also, on "Let him go", Taylor singing the top section carries his note on further after the rest of the "choir" have stopped singing.  Lyrical references in this passage include Scaramouche, the fandango, Galileo Galilei, Figaro, Beelzebub and Bismillah, as rival factions fight over the narrator's soul. The section concludes with a full choral treatment of the lyric "Beelzebub has a devil put aside for me!", on a block B major chord. Roger Taylor tops the final chord with a falsetto B in the fifth octave (B5).  Using the 24-track technology available at the time, the "opera" section took about three weeks to finish. Producer Roy Thomas Baker said "Every time Freddie came up with another 'Galileo', I would add another piece of tape to the reel." Baker recalls that they kept wearing out the tape, which meant having to do transfers.

Using a quote from the above article, answer the following question: What year was it produced?
Using the 24-track technology available at the time, the "opera" section took about three weeks to finish.