Track structure
Cold open
A cold open is a track that starts on its full arrangement with no intro to mix over — the first beat is the record at full strength. Radio edits and older records do it constantly.
In practice
No intro, no runway. A cold open is a cut, a phrase-boundary drop, or a loop you built yourself.
Check the first eight bars of anything unfamiliar before you plan a blend into it — a cold open is obvious in two seconds of preview and invisible if you do not look. When you have one and want a blend rather than a cut, loop four or eight bars from a thinner part of the track and use that as an intro you bring in first. Cold opens work best where the cut is meant to be heard, which makes them natural peak-time records rather than warm-up ones.
0
Bars of intro
Cut
The honest option
Build one
From a loop elsewhere
Where these come from: Arrangement and transition practice. Our analysis reads whole tracks rather than sections, so we do not measure intro length. Whole-track analysis cannot tell you whether a record has an intro or how long it is. That is a section property; the check is two seconds of preview. For what we can measure, see the runway this lacks.
Why it matters
It removes the runway every blend depends on. With no intro there is nowhere to bring the record in quietly, so the only honest options are a cut, a drop on the phrase boundary, or building your own intro with a loop from elsewhere in the track.
It is also the most common reason a beautifully planned transition fails on an unfamiliar record. The waveform shows a track starting immediately and the DJ discovers it at the moment the fader moves.
Frequently asked
How do I mix into a track with no intro?+
Cut on a phrase boundary, or build an intro from a loop of a thinner section elsewhere in the track and bring that in first.
Which records have cold opens?+
Radio edits routinely, older records frequently, and plenty of modern tracks made for streaming rather than for mixing.
Are cold opens bad for DJs?+
Inconvenient rather than bad. They suit moments where a hard cut is the point, which makes them peak-time records rather than warm-up ones.
Related terms
Intro
The intro is the stretch at the start of a track built for mixing — usually drums and little else, running a fixed number of bars so an incoming record can be beatmatched and blended before anything melodic arrives.
Radio edit
A radio edit is a shortened version cut for airplay — usually under four minutes, with the long intro and outro removed and the arrangement tightened. It is the version that gives a DJ the least to work with.
Cut
A cut swaps one record for another on a single beat, with no overlap. It is the fastest transition there is and the only one that works between two records with nothing in common.
Arrangement
The arrangement is the order and length of a track’s sections — intro, groove, breakdown, build, drop, outro. It is what you are actually mixing with, more than tempo or key.
Explore: Cue point calculator · Intro · Radio edit · All DJ terms