Songwriters (especially those connected with Nashville) have been told for years to create demos that are radio ready. Many artists/labels use the exact same arrangement from a demo on their release.
BUT… if you are a songwriter pitching a song is it necessary to do a fully arranged perfectly produced demo?
Check out this great article from the BMI web site by Cliff Goldmacher about why making stripped down song demos could be a really good idea:
The Benefits of Stripping Down Your Song Demos.
Be sure to listen the “Before and After” audio of a professional recording – what a difference!