If you are trying to register any type of performing art you should follow the copyright process as explained here. Performing arts can generally be described as any artistic work intended to be “performed” directly in front of an audience or indirectly “by means of a device or process”. This includes motion pictures, audiovisual presentations, dramatic works in script form including accompanying music and musical works with accompanying words. The phrase above “intended to be performed” is crucial in determining whether to register as a performing art or as a sound recording. If you register the words and music as a performing art you are protected, but if you record a performance of the song you must then register that performance as a sound recording. If you fall within this category you should register for a performing arts copyright.