The Hang® Urgu was introduced by PANArt in August 2015. It resembles the Gubal, but has no tone circle. In the Pang ensemble it is the bass. Compared with the Gubal the bass sound of the air in the cavity (the Helmholtz resonance) is stronger because no energy is extracted for the sound radiation of the tone circle.
Currently there isn't much information about the Hang Urgu on the Internet.
The Hang Urgu can be ordered online on PANArt's website. Here you will find also further informationn about the instrument.
You can watch videos with the Hang Urgu in a playlist on PANArt's YouTube channel. It is also played in the Video Hands on Pang of the PANArt Pangensemble. Listening to these recordings you need good speakers or headphones, because the little loudspeakers in smartphones, tablets or notebooks and many earphones don't play back the deep bass sounds of the Hang Urgu's air resonance: