BB might create usable midi files but it will not be anything specific, such as a riff or melody you come up with. So having an input for midi (keyboard) is essential for most folks.

You can also use your mouse to enter note by note. PITA IMHO. You have to choose the pitch, duration, velocity, and exact starting point.... like I said.... really tedious to create something useful when if you have a keyboard and can play.... just play and it captures exactly what you played.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.