I have been looking for ways to record MIDI with several people playing at once (in a sort of jam session setting) and I had a great challenge figuring out how I to use two keyboards to controll two different synths, but record them at the same time. I figured out a way, and here it is, for those who may find it usefull, in this example I use my Nord Keyboard, Oxygene 8, and Akai s5000, but you can obviosly substitue whatever sound modules and controllers you use. So in this example, I'm going to make my Nord Modular keyboard control itself (it is a sound module with the keyboard controller attached), and I'm going to make the Oxygene 8 control my Akai S5000 sampler. Side Note: Just in case some of the terminology is confusing, a sound module is something that makes sound (like a synth or a sampler) and the controller refers to a device which sends MIDI info that can control the synth, like playing a keyboard that will make drum sounds. (Forgive me for the obvious, but when I was a greener newbie, terminology often confused me). So are you ready? Good. Here we go!!!!!! ;) 1)Assign each MIDI keyboard controller to output on unique channels. This step will depend on the controller you are using. You may have to check the documentation that came with your controller. In this example, I have my Nord Modular on MIDI channel 1 and Oxygene 8 on channel 2. 2)In a logic environment (I stay on the clicks and ports layer, but it doesn't really matter what layer one uses) Wire objects as such: -From the physical input, attach two transformers. -Assign one transformer to filter all data except that on channel 1 -Assign the other transformer to filter all except channel 2 -Create two single intruments, assinging one as the Nord and one as the Akai. -Wire the tranformer for channel 1 to the Nord, and the transformer 2 to the Akai instrument. -Now wire from the instruments to the sequncer input/record module. 3)In the arrange window, create a track with "no output" and highlite it. 4)Now you can play the Oxygene 8 and the Nord and they will control two different sound modules. But what if the sound modules is a 16 channel multi-instruments, how can I controll a sound on say MIDI channel 5? Good question, the answer is you can go to the instrument object (in the environment, wired right after the transformer), highlite the instrument and in it's parameter box (on the left of the screen) you can specify what channel that instrument will use. 5)Now you are ready to record. Go back to the arrange window. Record ready the "no output" track that is highlited, and play away. Record away. When you are finished, you will have a sequence with information on two different MIDI channels, so after you are finished recording, choose the "demix by channel" action in the menu and walla, you will have two distinct sequences. Now you can create a track in the arrange window for the nord, and one for the Akai and now you have Multiple Controller, Multi-track MIDI recording. You can have up to 16 different controllers controlling 16 different synths (one for every MIDI channel). Okay, on a side note, I think there are other ways of doing this, but this is the only one I that I have gotten to work, so far. It can be a bit cumbersom at times, because you have to keep going back to the environment window if you want to change what sound you are controlling (i.e. the channel parameter of the instrument). But it works :) Thank you for reading my spiel, and I hope someone finds this usefull. I would also like to thank Hendrik Jan Veenstra for his input. If anyone has suggestions or imporovements please e-mail me personally. Questions are also welcome. Take care, happy sequencing. Cheers, Andrew Mylko