I had the occasion to hear a Hang being played one summer eve of 2012 in Wissembourg. It’s a very interesting musical instrument as it appears to be a combination of a percussion and a pitched instrument, similar to a Steelpan.
Dmitry Yeryomin (aka SynthKeyWizard, SKW) shared samples of the instrument for the Korg Kronos. Don’t miss the video where he plays the samples. It is available at the bottom of the download page. Additionally he shared samples of a Duduk. Don’t miss the excellent video.
Another enthusiast maintains the hangblog.