The invention relates to a finger positioner that facilitates playing musical instruments. The finger positioner comprises a wedge (1), which is positioned between two adjacent fingers of the fretting hand and in parallel to said fingers so that the wedge spreads the bent fingers in the area of the distal phalanges of the fingers, wherein the narrowly tapering end of the wedge points at the palm and wherein at least one pin (2; 3; 7) is provided, which penetrates the wedge in the transverse direction and lies against the inside of two adjacent fingers and thus holds the wedge in the correct position. In order to avoid tilting, the wedge is approximately as long as the fingers or is held in position by a further pin. The longitudinal section of the wedge (1) can be bent similar to the fingers of the fretting hand. The pins (2; 3; 7) can be straight or slightly bent and protrude from both sides of the wedge (1) by approximately half a finger width.