Lip-syncing taken to the extreme. As long as they don't call it a "live" performance. Concerts are expensive undertakings - maybe there is a place for events

Lip-syncing taken to the extreme. As long as they don't call it a "live" performance. Concerts are expensive undertakings - maybe there is a place for events like this in dedicated arenas like the Sphere where you can minimise costs like transport, setup/pulldown and staffing and you have the light and sound capability to make each acts performance unique?