I’m curious about this, i know that you can use beatgrids in traktor to sync your acapellas to the beat.
But how would you do it on a CDJ? Do you need to analyze your acapellas and set the BPM beforehand? Or Just change the BPM using the pitch slider and try to beatmatch it?
When playing an acapella, you can clearly imagine a beat going in your head, according to the singer’s intonation. That’s what you should match to the other track playing.
Most cd players won’t get the bpm right. If you have difficulty beatmatching acapella’s I would suggest you to find the bpm in advance and write it on the cd sleeve or something.