"Pop" features tape loops, programming, sequencing, sampling, and heavy, funky dance rhythms. The Edge said in U2's fan magazine "Propaganda" that, "It's very difficult to pin this record down. It's not got any identity because it's got so many." Bono has said that the album "begins at a party and ends at a funeral", referring to the upbeat and party-like first half of the album and sombre and dark mood of the second half. According to Flood, the production team worked to achieve a "sense of space" on the record's sound by layering all the elements of the arrangements and giving them places in the frequency spectrum where they did not interfere with each other through the continual experimenting and re-working of song arrangements.