Hi Clollin and welcome to the Community,

You have not given us enough information to help you. 

Which version do you have?

Do you want to record midi or audio? See this thread for midi.

Is your keyboard connected and does it work with MMM?

Did you read any of the manual? Especially the tutorial near the beginning?

Did you look at other messages here about the same subject?

Did you look at any of the tutorials in this forum? On the Magix site?