【Beautiful Pop-Up Card】US copyright and patent design. Happy birthday cards with beautiful 3D pop-up design that automatically play birthday songs are sure to bring a smile to birthday celebrations. Plus, the entire birthday card design is beautifully bathed in color-changing lights that glow in sync with the music! There are no more greeting cards like this that can provide him/her with a better surprise. Who would say no to a greeting card with music, blowable candles and shiny LED lights?