Pull the vocal off a record and what is left should behave exactly like the original did in your library — same key, same tempo, same grid. Usually it does not. Here it does, because the analysis is done on the full mix and written into both halves.
Most analysers report a tempo good to about half a percent. That is fine as a label and useless as a grid: 128.4 against a true 128.0 drifts more than a full beat across a six-minute record, so the grid looks right at the start and is wrong by the breakdown. The tempo here is taken from two independent estimators that have to agree, then snapped to the integer grid that 94% of dance records actually sit on. The beat positions supply only the anchor.
The full method, including where it declines to guess, is on the accuracy page.
Drop a track and hear the first 30 seconds free. No account, no card.
Open the toolYou can pull the instrumental, but the instrumental is not a clean edit — it has no vocal at all rather than a censored one. For a radio edit you would still need to comp the acceptable vocal phrases back over it.
Yes. You get AIFF as well as MP3 320. AIFF because it is lossless and Serato reads its tags natively.