MUSIC | Canon in D major - Pachelbel Open the Music Box Card to reveal a beautiful Wedding storytelling scene. Listen to the music and watch the happy couple magically glide around and around to the wedding music. The front of the music box card looks like a conventional card, but opens to reveal a magnetic dancing character which moves around the card to the music when you press play. With a space to write a personal message on the back, every card also comes with a pearlescent gold envelope.