Developing one's own arrangement of the music is considered a derivative work, which would ordinarily require a separate license. The derivative work is itself copyrighted, but if the original work is under copyright, then permission of both the composition's rightsholder and of the arrangement's rightsholder is needed before performance, distribution, or recording is planned. An arrangement of a traditional song or piece of music will be protected by copyright even if the original piece is in the public domain. For instance, ASCAP has over 40 arrangements of Beethoven's "Moonlight Sonata" under license, and nearly 80 versions of Row, Row, Row Your Boat.