Chicago DJs' reel-to-reel dancefloor edits were a direct precursor to producing original house tracks

Before house existed as recorded music, Chicago club DJs reshaped existing disco and electronic records by cutting reel-to-reel tape edits — isolating and looping the sections of a song that worked best on the dancefloor, and sometimes layering in effects, drum machines, and other rhythmic electronics to make records hit harder. These edits and remixes were rarely released publicly, circulating only on privately pressed vinyl or mixtapes. This editing practice matters historically because it is the bridge from DJ-as-selector to DJ-as-producer: once DJs were already rebuilding tracks around a dancefloor-focused arrangement and adding machines, making a wholly original track (as Jesse Saunders soon did) was a small further step. It also seeds the extended-edit and remix logic that runs through all later dance-music production.

Examples

A DJ loops the percussive breakdown of a disco record on reel-to-reel, extends it, and drops a TR-808 pattern over it for the Warehouse crowd — a private edit that never gets an official release, only a privately pressed pressing or a mixtape.

Assessment

Explain how DJ reel-to-reel editing practice led toward original house production. Name two things Chicago DJs added to their edits beyond simply looping sections.