Technology that heavily involves music, usually either activating things, or somehow being a power source.
This cannot be music for puzzle solving, or things like that. It has to be technology using music.
Name is a pun on the term "discotheque".
Magic Music is the magic counterpart to this trope.
Compare
The Power of Rock,
Band Land.
If the music is used as a weapon, you're looking for
Musical Assassin.
Examples:
Anime and Manga
Film
Live-Action Television
- The Star Trek: The Original Series episode "The Paradise Syndrome" features a potentally world-destroying asteroid held at bay by a repulsive field that is controlled through the use of music
Video Games
- In Chrono Trigger, the cathedral of the Middle Ages features doors that can be opened by playing a nearby organ.
- In Mother 3, you can perform combo attacks by pressing the A button to the beat of the battle music. This feature is described in-game as a "sound battle".
Web Comics
Western Animation
- The lost city of Tinnabula from the two-part Tale Spin episode "For Whom the Bell Klangs".
- A Disney Silly Symphonies short "Music Land" involved a war between anthropomorphic violins and horns, playing their music as weapons.
- There's an episode of Batman The Animated Series which involves playing the beginning of "Ode To Joy" to unlock the secret room.
- The girl's voice in Rock and Rule was significant to help Mok with his summoning spell.
Real Life
- While not strictly musical, the principle behind acoustic refrigeration
relies on resonating sound. The effect is something close to a real-life version of Maxwell's theoretical demon.
- The Zeusaphone is essentially a Tesla coil that shoots lightning, tuned in such a way as to produce musical notes.
