[LAU] seeking a creative songwriting solution.

Hi imaginative folks, honestly, I do not have a direct Linux box itself, I use shells, because I have yet to find an adaptive workable tool...but I suppose scripting is possible. That being said, an idea in another Windows environment may work as well. what I am wondering is this. How possible might it be to use your singing voice for composing? what I mean is to sing the parts into your software of choice, then using that software to first add the orchestrations, playback etc., then produce that music in printable form? The last task is less important for the moment. getting my pieces out of my head, and into arranging and composing form is though. thoughts? Karen