Splitting keyboard input to play different instruments

I can't vouch for Express (not sure what is not included) - but if you can use the Environment, this guy shows you how to do what you want.
The first 4-5 minutes give some background, and then he gets in to what you need.

http://www.youtube.com/watch?v=b5txlSGKImA&feature=PlayList&p=673C50765CE18C57&i ndex=1&playnext=2&playnext_from=PL

Use the "demix by channel" option in the Project Preferences->Recording->Midi
Assign one Instrument to e.g. Channel 1 the other one to Channel 2, now assign different Midi Channels to the split zones on your Keyboard (if that is possible, if not ignore my post).
Then select both Instruments in the Arrange (shift+click on the tracks).

mik.e245 wrote:
I was wondering: is there a way to do this in Logic Express 9? For example, all the notes lower than C2 play a bass ES2 instrument, and the higher octaves play a piano?

There was absolutely the same question here some time ago. Have a look at this [LINK|http://discussions.apple.com/thread.jspa?messageID=10462661&#10462661], where I give detail step by step instructions.

PS. The provided Youtube video is quite different topic about "Mapped Instrument" where it is comfortable to map the pitch and outputs of a given pad. In the same time it is after the sequencer so your incoming notes will be recorded in the original octave and you will audition in the target pitch, which may mess you. So I do not recommend this method...

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