Abstract: A musician's chair includes a stand, the stand having a top barrel, a locating ring spaced below the top barrel, and a sleeve connected between the top barrel and the locating ring, a seat with a threaded seat stem inserted into the sleeve of the stand, a seat stem holding down device connected to the top barrel and controlled to hold down the seat stem against vibration, and a seat stem fixture supported on the seat stem holding down device and controlled to fix the seat stem at the desired elevation, wherein the seat stem holding down device includes a fixed plate integral with the barrel of the stand, a movable plate hinged to the fixed plate at one side, and a fastener fastened to the movable plate and the fixed plate to fix the movable plate and the fixed plate in a closed condition, causing the seat stem of the seat to be held down in a hole at a horizontal top wall of the fixed plate.