perpetuum mobile
Latin noun phrase
per·pe·tu·um mo·bi·le
per-ˈpe-tu̇-ˌu̇m-mō-ˈbē-lā 
: perpetually moving thing : perpetual motion
—used for a musical composition having the same rapid motion from beginning to end
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“Perpetuum mobile.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/perpetuum%20mobile. Accessed 31 Dec. 2024.
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