Preheat the oven to 350 degrees. Line 2 cupcake tins with paper liners and set aside.

In a medium bowl combine the flour, baking powder, and salt. Set aside.

In a large bowl cream together the butter and sugar until smooth. Add in the eggs and mix well. Stir in the vanilla.

Add half the flour mixture to the butter mixture and stir well. Add the cocoa powder and mix until well combined.

Add the Coca-Cola to the butter mixture and mix until smooth. Add the remaining flour and mix until smooth.

Divide the batter into the muffin cups filling 2/3 of the way full.

Bake for 20-25 minutes or until a toothpick inserted into the center comes out clean. Remove from the oven. Remove from the muffin tins and place on a wire rack to cool completely.

To make the frosting cream the butter in a large bowl. Add the powdered sugar, a half cup at a time, until desired consistency is reached. Add in the Coca-Cola and vanilla and mix on high. Add in more powdered sugar if needed.

Frost the cupcakes with all but 1/2 cup of the frosting.

With remaining 1/2 cup add several drops of black food coloring and mix well. Pipe onto the cupcakes in the shape of music notes. Enjoy!