It wouldn't be hard for Apple to make something like this, licence it or buy the company. When SIRI came out I emailed Apple saying it'd be a perfect add on. "what band is this" "what track is this" "what album is this from" etc. Siri could find it and ask if you want to download the track or album and take you to the iTunes store ready to buy.
2/25/13 at 2:02pm