My wife (a violinist) is recording an album and paying a musician to play the piano improvisationally, as she described what she wanted, and to protect her rights to distribute and earn money from the work, she would like to have the musician sign over copyright of the arrangements and performances to her.
In the state of New York, is a short signed statement to that effect sufficient? Something like:
In exchange for compensation in the form of ________ I have been paid I assign complete copyright of my performance and the arrangement of the music pieces known as __________________ to Natalie Hall.
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