You've probably used Gracenote thousands of times and have been none the wiser, but for good reason: the musical metadata service lives in the background of several apps, appearing only momentarily to bring meaning to your favorite tunes. Now, Gracenote is looking to expand its reach by opening its APIs and SDKs to app developers -- effectively putting its massive database in the hands of all who seek it. Of course, ripping CDs isn't quite what it once was, and that's why Gracenote has also opened its MusicID song recognition service to developers, allowing them to harness the same functionality of apps such as Shazam and SoundHound. The free service is available now, and for extra insight, you'll find the full PR after the break.