As you can see, I'm not in school today! Which means you have a perfect opportunity to show me what you can do - independently!
Your task is to complete your musical app.
Take time to add pictures of musical instruments to your app (rather than just basic shapes) and try to download some sounds of your own (remember, they need to be .wav sounds).
Don't forget to add mouse-click and/or mouseover actions.
Look at the pictures below for a guide on how your app could look.
Mr L