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 :
Fine-tuning Bohemian Rhapsody | Industry Trends | IBC
Queen - Multitracks Separated Vol I ( 2 CD ) ( Bohemian Rhapsody , Get Down Make Love , Killer Queen , Brighton Rock , One Vision & more ) - Thecdvault
Why 'Bohemian Rhapsody' Is One Of The Most Masterful Recordings Of Our Time | WBUR News
MOGG Files - Multitrack Digital Audio Format | Just another WordPress.com site
Queen - The Multitracks Mixes... - Queen Music Collectibles | Facebook
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 - Multitracks Separated Vol II ( 2 CD ) ( We Will Rock You , Someone to Love , Play The Game , Under Pressure , Crazy Little Thing & more ) - Thecdvault