Bohemian Rhapsody (2018) during the filming of the recording studio scene, the multitrack recording of the original song was played through thue equipment. You're seeing the needles move to the original song :
Stream [Multitrack Acapella] Queen - Bohemian Rhapsody - by MashedMadFab by MashedMadFab | Listen online for free on SoundCloud
Oscars: How the 'Bohemian Rhapsody' Sound Editing Team Re-Created Rock & Roll Royalty - Sound & Picture
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Inside The Mix - Learn How Queen's Most Popular Song Of All Time Bohemian Rhapsody Was Recorded & Produced. Hear Legendary Moments In Isolation | Production Expert
Queen Multitrack Masterpost – Club Remixer . com
MULTITRACKS ORIGINALES de Bohemian Rhapsody | 100% real 2019 | link en la descripción del video - YouTube