Mohssen Behrad and Kourosh Zolani invented a new Santour. For the first time in Persian music history, the musicians do not need to retune this new Santour in order to play different Dastgahs or scales.  
This new Santour has patent protection in many  countries including Iran, USA, Canada and Europe.

Watch Kourosh Zolani and Mohssen Behrad demonstration of the new Santour on Ziafat.