My grandson plays piano and asked me for a piano cake. I baked 2 9X13 cakes. Filled with strawberry buttercream. Attached the cake to the cake board with buttercream, then froze the cake before carving it.
Drew a piano template in wax paper and shaped it with the scissors then attached it to the cake with tooth picks then proceeded to do the carving of the cake as well as the cake board. Applied a crumb coat and covered the cake with white fondant. Painted the borders and lettering with gold luster.
Finally attached the columns with hot glue to the bottom of the cake board. Of course we took them out before cutting the cake.