moto perpetuo; perpetual motion
A musical term for a piece or passage characterized by a continuous steady stream of notes, often at a rapid tempo. Compare 常動曲 (じょうどうきょく), which is a more common synonym.
See also: 常動曲
Paganini's 'Moto Perpetuo' is known as a virtuosic violin piece.
Compound of 無窮 (むきゅう, 'eternity, endlessness') and 動 (どう, 'motion'). The exact origin as a musical term is uncertain, but it likely translates the Italian 'moto perpetuo'.