Is the songwriter also the performer?
First episode was on last night. I enjoyed it quite a bit. It does appear that the songwriter does sing the song and there's a band on the side that accompanies the songwriter/singer.
They listen to about 5 songwriters and provide feedback to each one. They narrow the field to 3 and each of them works with a judge on improving the song. The main guest singer, John Legend, last night, makes the final decision on the song they want.
Pretty good format and they made it interesting. I wish they focused a little more on the songwriter's development of the musical parts and style. They were more into the lyrics.