Verified answer

yes. By arranging your compositions and documenting them as yours. Then, get instrumentalists to play the comps. Record them. Then you will have a portfolio of your compositions as sheet music and recording, and you'll have examples of your recording expereince. if anything, you'll always have your hard work on CD and you can enjoy it for yourself down the road.

Also, document how you recorded, (when, where, equiment used, methods used) so you know.