Step 1: 
We can start once again by grabbing our Wrapper folder, and our original Music folder.

Then we remove the assets that we will not be able to use.
  

Step 2:  
I keep all the notes and the CDs, though I don't know if we will be able to use them. I mostly want to be able to use them to copy effects and fills from them, while we create our new assets.

That said, I quickly create new ones as simple objects, using circles and boxes.

When I have the shapes, I weld the notes together. I also combine the circles together, creating an inner and outer ring for our disk.

Step 3: 
Before I go any further, I group our two disk circles together, so that I can apply a perspective to them.

Now I use the Perspective tool to quickly give our new notes new perspectives. I also do the disk at this point. 

 
Now it looks like we won't have enough room to get our green note in without crowding the composition. This frees us up to move on to our fills. We will start with the CD.

Step 4:  
I give the main body of the CD a nice Conical Fill, copying the colors from our original CD. Then I give the center ring a gray to white liner gradation.

I give the same fills to the rear disk, however when I'm done I tint them 2 clicks black, to darken them up.

Then I copy both rings one more time, move them behind the originals, and over to the right a bit, to create the illusion of thickness. I also tint these a little darker.

Step 5:
Now we need to make the inner rings of the disks transparent, which we do using the Interactive Transparency tool, and give them a liner transparency.

At this point we need to use our front circle to crop the copy of it we made in step 4, so we can have a lip yet be able to see through the "Glass." We need to do this twice, once for the inner lip, and once for the outer lip. 

We do the same thing for the rear disk.

 

Step 6:
Before we give the discs gloss or shadows, we will go ahead and move on to the music notes.
 
We will be doing them with mesh fills and blend groups. We start with the blend. First I draw a fresh ellipse over the bulbs of our notes. Then I copy that ellipse and make a smaller version, down toward the bottom of the other. We make the larger one the same color as our note, and the smaller one a lighter blue.



Now we just blend the two ellipses together.

Step 7: 
Next we draw two new mesh rectangles to give that glossy look to the rest of the note.



When we are done with the blue note we do the same thing on the new red note.
 

Step 8:  
Now we need to go through all of our new shapes and create new gloss, which we do this with our standard gloss technique. We have to be careful to crop some of the gloss on the Wrapper folder where it would be occluded by our new objects.

Step 7: 
Once again our last step is the Shadows and Reflections. These are a bit more difficult than normal, because we have a lot going on, and several reflective surfaces to keep in mind. See shadow and reflection techniques for more.  

Finished Icon:
Here we have it, the new Music folder. I think it stands up well when compared to our original.