In August 2011, Google added rich snippet support for
MusicRecording structured data. It looked like this:
But today, I don't see any mention of it in their current rich snippet feature guides.
I found this thread on the Google webmasters forum from a few months ago where another forum user seems to confirm its removal, however his answer is both unclear and unsourced.
Did Google discontinue this type of rich snippet, and if so, when did they do it? Did they make any sort of announcement or did they discontinue it silently?