Chorus is the fifth studio album by British band Erasure, released on 14 October 1991 by Mute Records in Germany and the UK and on 15 October 1991 by Sire/Reprise Records in the United States. It later made the short list of nominees for the 1992 Mercury Prize. In 1999, Ned Raggett ranked the album at number 45 in his list of "The Top 136 or So Albums of the Nineties". Background Upon its release, Chorus became Erasure's third consecutive number-one album in the UK and gave them four more top twenty hits. In the US, it was Erasure's highest-debuting and highest-peaking album on the Billboard 200 at the time, entering at number 29. It gave Erasure their first Billboard Hot 100 entry since "Stop!" with the title track, which also charted well on the Modern Rock Tracks chart and Billboards Hot Dance Music/Club Play chart. Chorus also charted well in Germany, where it peaked at number thirteen. Production Prior to the album's production, programmer Vince Clarke had noticed technical limitations of the by-then-predominant MIDI sequencing standard. Specifically, triggering multiple notes at once queues them and sends them one at a time, resulting in "MIDI slop". In an effort to eliminate this and give the album a "tighter" feel, he avoided MIDI completely, using primarily analog synthesizers and the Roland MC-4 CV/gate sequencer. Avoiding MIDI had other side effects on the sound of the album, such as the lack of chorded voices (the MC4 can only trigger four notes at a time, lending itself well to playing four monophonic parts) and the absence of digital synthesizers and samplers, due to lack of CV/gate control on available models. Clarke would continue with this production technique for later recordings through the 90s. Special editions Chorus was also released as a limited-edition CD in special packaging. Instead of a jewel case, it came in a folding cardboard box. The cover was also different, with the two portraits taken from the side instead of the front, as on the cassette releases. It included the standard lyrics booklet, as well as 8 picture cards with various artwork. The first four are the stock photography from the booklet and have "e" logo backs: family on the beach (later used for the "Love to Hate You" single cover), a business meeting group, three businessmen at a construction site, and a woman and child bicycling. The next four