RedSam

Honestly, I think this is awesome. If I saw this in a CD store, I'd immediately pick it up just to see who the artist is and probably look for one of those headphone/scanner machines so I could give it a listen.

Something that I think detracts from the piece a bit is the heart up near the top left corner. It's a bit too rough around the edges, whereas all the other brushes have softer edges. I think just blurring it a bit would make it work better for the piece overall.

The manip inside the window is great. I love that it's well done and seemless. However, I would consider adding a reflective light or something on the glass, to make it look like it really is a window. Maybe even a reflection of the ceiling lights inside the room?

As for the phrases scattered around the work, I would try to come up with more original phrases. One of them is lyrics from a Madonna song, for example. It would add a lot more to the piece if the phrases came from your heart and mind.

But overall, I think you did a great job, and I'm sure your friend loved it!