A work prepared by two or more authors with the intention that each contribution will merge into one inseparable whole. If one songwriter writes all of the music to a joint work and another songwriter writes all of the lyrics to the joint work, each songwriter will own 50% of both the music and lyrics.

Making Your Own Music: Songwriting Basics
Songwriting is an excellent way to express your thoughts and feelings and to communicate them to your friends and family, even if you have no aspirations of musical fame or fortune.

