Sure, but that's not what the parent I was responding to was suggesting. gbc0 was specifically talking about using a 104 key keyboard to write out music, so I addressed that option and it's pitfalls. Other people have addressed issues with the midi keyboard option though.

I can't really address that very well because it's beyond my experience, but I'll summarize what I've seen. The main gripes seem to be it's still a little slow to enter notes because you have to specify the note length each time you want to change it and that it takes up a lot of space compared to something like this where you can just write it out when it may or may not be your instrument.