Alesis photon - cubase le recording question

[dkimcohn]

Hey peopleok so I got an alesis photon 25 with cubase le, everything works I get sound and everything.
My question is when I record midi in one track and play it back everything comes out fine. Now when I go to the next track and play something else with a different sound, the previous track that I recorded sounds the same with the 2nd one. What do I have to do to set up each track that I record with the a specific sound using midi?
Is there something that I have to change in the program? or in the machine?
So to wrap it up I'm trying to record different sounds with midi on each track but when I record something and go to the next track, the previous sound adapts to the new one.
Please heeeeelp!!!
Thanks for your patience people.