If your beat comes from a pattern programmed on a drum machine, you have to reprogram your individual hits to create a reversed version. If your beat comes from a sample loaded in a Machiniste's slot, just set START to maximum and END to minimum and the sample will play backwards. If your beat is coming from an Audiotrack, open the audio region on the timeline and invert the positions of the start and end dots (drag the start dot all the way up and the end dot all the way down). I hope this helps.
If your beat comes from a pattern programmed on a drum machine, you have to reprogram your individual hits to create a reversed version. If your beat comes from a sample loaded in a Machiniste's slot, just set START to maximum and END to minimum and the sample will play backwards. If your beat is coming from an Audiotrack, open the audio region on the timeline and invert the positions of the start and end dots (drag the start dot all the way up and the end dot all the way down). I hope this helps.