"Six String Orchestra" is a song written, composed, and performed by Harry Chapin and released on his 1974 album Verities & Balderdash.
He practices late in his room and is not disturbed, his mother saying he is "nothing yet to make the folks write home."
Love songs he writes, composes, and performs for a girl he is trying to impress instead result in her excusing herself to find a bar before he gets to finish.
He also receives form letters from these record companies, whose suggestions include finding a trade where he will not be required to sing.
Chapin's point is that the narrator of "Six String Orchestra" is ultimately doomed to failure in his ambitions to make his career in music because of a total lack of talent and complete inability to play the very guitar he has hoped will be his ticket to fame—a guitar of low price and even lower quality that the narrator does not even bother to keep in tune.