Decades before hip-hop deejays began mixing records in the South Bronx, French engineer Leon Gaumont was crossfading records using his fantastically flamboyant Chronophone. If you ever needed to rock a party Fantômas-style while pouring a flagon of champagne out for poor dead Jules Verne, this was your rig. But in all seriousness, this set-up was suited for the cinema. As Auxetophone explains of this device's history:

For another outlandish facet of turn-of-the-century Parisian nightlife, see the Heaven and Hell nightclubs of Montmartre.

[Victrola Gramophones, Citizen Sound, and Auxetophone via Dangerous Minds]