DJ advise, Two toons same BPM, but they dont mix, why?

0:00 I mean, they shouldn't because if they say they're at 128 BPM or 127

Folks, Jonathan here. A lot of people have been saying, got a couple of CDJ players and they bunk two tracks in. The two CDJ players say that both tracks are at 128 BPM, so theoretically they should mix, but they don't. They may stay in beat for like one or two seconds, but eventually they go off. Why do they go off? I mean, they shouldn't because if they say they're at 128 BPM or 127... One is at 127, the other one is at 127. Then why shouldn't they stay in beat? Now hopefully in this video I'll explain why that's the case, that they don't all the time stay in beat. Hold tight. Okay guys, what you can see is you can see this particular track is at 128 BPM, tempo there 0.00. The reason I've got this white piece of paper there is we don't really need to look at that area. And the pitch is at the centre position.

0:53 We're ready to play

We're ready to play. What I'm going to do now, I'm going to play the music and I'm going to slowly move the pitch control towards me to the plus position, therefore the actual speed of the music will increase. So we'll do that first. Now I want you to watch the numbers up there. 20, 25, 30, 35, 40. Now 40, it went from 128 to 129. So why did we go... From 0.000 to 4, before it went to 129. Now let's do the opposite. Back to the centre position. Now we're going to go to the minus position on the pitch control. What that basically means, we will now be decreasing the actual speed of the pitch. So we've got minus 5, 10, minus 15... Minus 20, minus 25, minus 30, minus 35, minus 40. And now we're at 127. Right, hold tight and I'll explain exactly what's going on. Okay, it may seem a bit bizarre but it's quite, it's sort of as clear as mud really. You've got a track at 127 BPM. You've got another track at 127 BPM. But one of the tracks could be 127.1 BPM.

2:24 It could be at 127.2 BPM, it could even be 127.25 BPM

It could be at 127.2 BPM, it could even be 127.25 BPM. Now if you think about it, your two CDJs say 127, so you start them off and they mix perfectly, but after one or two seconds they slowly go off, because one could be at 127, the other one could be at 127.2, 127.3, 127.4. This is why you do see a lot of pro DJs with their fingers on the pitch controls and they're fine tuning because they're getting it from, let's say for example, the one track is at exactly 120 BPM, let's say. But the other track is at 120.2 BPM. So what they need to do, they need to fine tune one of them to get them precisely at the same speed. So that's what this guy here is doing. It's getting it exactly at that right speed so they're both matched perfectly. Now I hope you get the general idea. I hope so. Practice and enjoy.

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