
The first set (close to the base) is tuned to kharaj shadja (the note shadja in the lowest register). The three strings of each set are tuned to the same note. Further, there rows of nails on the left 'wall' of the box serve to fix the strings, with corresponding tuning peg holes on the right 'wall' of the box. There is thus a rise and dip of the strings depending on the placement of the peg. An arrangement of pegs on the box surface holds each set alternately from the left or the right side. The eighty seven metal strings are placed parallel across the box, in twenty nine sets of three strings each. The present-day classical instrument is a trapezoidal box, with a resonance chamber that emits sound through the circular opening at its narrow end. The santur form can also be seen in the folk instruments of Russia and Eastern Europe. The eighty seven-stringed instrument believed to have evolved from the hundred-stringed lute (shata-tantri vina) of the Vedas! However, the classical santur has evolved from the Kashmiri santur, and the latter was indeed a hundred-stringed instrument.
