Playing two copies of the same track to juggle, loop, or extend it.
Spinning doubles means loading the same track on both decks so you can bounce between identical copies, extend sections, or perform beat juggles, a staple of hip-hop and turntablism.
Why it matters
Doubles let you rework a single track live, holding a loop or rhythm indefinitely, which is a performance skill worth the prep of having clean copies ready.

