Carillon strike the inside of the bells, allowing the performer on the bells, or "carillonneur/carillonist" to vary the intensity of the note according to the force applied to the key. Although unusual, real carillons have occasionally been fitted to theatre organs (instead of the metal bars or chimes more often used in simulation), such as the Christie organ installed at the Regal Cinema, Marble Arch, in London. A carillon-like instrument with fewer than 23 bells is called a chime. The carillon is the second heaviest of all extant musical instruments, only ranking behind the largest pipe organs. The heaviest carillon in
21 Things I Want in a Lover it was like a keyboard, an acoustic, an electric, my journal and a microphone set up, and we'd record it all onto DAT." According to the sheet music published at "Musicnotes.com" by Universal Music Publishing Group, "21 Things I Want In a Lover" was written in the key of C major, with a moderately tempo of 96 beats per minute. The introduction follows the chord progression of C5–C(5)–F5/C-C. Morissette's vocal range span from the low-note of G4 to the high-note of C6. The pop rock song starts with a "toothy" guitar hook, played by Dean DeLeo, followed by Morissette listing