If you can play what you wish to have recorded in real time, then you can record a new MIDI track. Here is a tutorial video on how to setup a MIDI keyboard with Band-in-a-Box for Windows, as well as how to make a MIDI recording with it. So you can skip to the second half when it gets to the recording part at 3:17:


https://youtu.be/zbROcpeQG1w


Best,
Chantelle