need some help on change ups

i need help on both hiphop and house tips but right now for the house producers in here, i'am trying to get this change up thing down, i got this 120 tempo beat going with a four/ four feel how do i throw a change up in there and how many reps or bars do you do per change up or when do i throw a change up in there.
and what is a change up for ,to add an new sounds or to give it a different tempo;
can someone explain this in laymen terms to me

thanks much appreciated

It is a way to introduce a new element or take away a current one to the track. The best thing to do is listen to a load of records & see how different people do things. It could be taking out some drums in the last bar before the change or maybe adding more. It could be a stuttering effect on a percussion loop ..... whatever feels right for the track you are working on. Listen to long disco tracks & see how they might bring a long percussion break in, or how they might bring the vocal in after a long instrumental intro.

Again, when you are listening to other records count the bars between different elements coming in & out. It will usually be every 16 bars or multiples of that. You want to have your basic rolling groove but you want to add a few touches so it isn't just like a one bar loop. So with your basic 4/4 beat you might have an extra closed hat every second bar, cutting short the open hat. Then every fourth bar you might put in an extra kick on 4.48 & extra claps or a snare roll every eight bars.

Throw in subtle changes, maybe a different high hat (pitched up or down) on a couple of bars. Change the high hat pattern slightly, etc. The typical reverse reverb crash is always a method of introducing a change. Lots of things are very unoticable at first listen but if you study a track you will hear lots of stuff going on.

The typical reverse reverb crash is always a method of introducing a change.

Yes ..... it never fails. I usually do this with a different cymbal sound being reversed to the one which plays the right way.

Like a magician would. If that doesnt help do a half-time breakdown.

I'm still learning, but try adding extra snares at the end of your sequence and a kick or two + the reversed cymbal. Or you could try taking out the last bar of your sequence, for e.g if it was 8 bars long truncate to 7 then change it to 8 again. You might put a sample in there or some extra beats to introduce a break or another sequence.

But like others have mentioned, listen to the pro's, emulate and add your own touches before long you find yourself just making your own stuff up and not having to refer to the "pro's".

One thing I have learnt is give everything room to breath and keep it simple to begin with.

Hope that helps a little

cool i'll try some of this but keep the reply's coming
thanks