My brother is a violinist and I've been waiting for a major birthday of his to be able to do this. It was my first time really doing something like this. The neck and body are cake. The bridge is made of gumpaste and the neckrest, and other black decor is made of a fondant/tylose mix. The scroll is all fondant. It's a chocolate cake with a chocolate SMBC. I covered it in white fondant and then painted it with a voka/brown gel colour mixture. The strings are made of flower wire. I printed out free sheet music from the internet that was for the violin, with several copies of Happy Birthday. I cut them down, used spray adhesive to glue them to the drum board and then covered the whole board with clear contact paper.