CamFind is an App that lets you take a picture to learn more about any object. It uses visual search technology to tell you what things are, and it can even tell you where you can buy them.
Another App is Discover, this let users capture visual and audio input with a smart phone and search for related information. It combines a variety of media search functions into a single App that allow users to scan images, audio, video, and even barcodes or QR codes.
For music you can try these Apps:
You can scan barcodes on products then look up prices and reviews using the App called Barcode Scanner.
Check out Top 10 Tips for Great Pictures, shared by Kodak Moments.