Also note that the musical composition is itself a copyrighted work, not just the recording. So that is a better case against #3, but still doesn't change #4 (u

Also note that the musical composition is itself a copyrighted work, not just the recording. So that is a better case against #3, but still doesn't change #4 (unless the songwriter are themselves offering a competing educational mechanism for learning the song... which could be the case, who knows!)