The music of Handel, Vivaldi and Bach et all is not copyrighted: only the recording. You are quite welcome to go make your own piano recording of the Goldberg V

The music of Handel, Vivaldi and Bach et all is not copyrighted: only the recording. You are quite welcome to go make your own piano recording of the Goldberg Variations and sell this. Similarly you can't make a sellable copy of the music book you might have learnt the notes from but you can make your own interpretation from the original manuscript, or other version out of copyright, and publish this.