Manual pulling instrument

A manual pulling instrument, in particular an accordion, comprising:

• a first housing part comprising operating elements which are configured to be operated by a player of the manual pulling instrument with one hand;
• a second housing part;
• and
• a bellows by which the first housing part and the second housing part are movably connected to each other;
• wherein the operating elements occupy a spatial area extending to a first boundary line on a first side and to a second boundary line on a second side opposite the first side, wherein the second boundary line is further away from the bellows than the first boundary line, and wherein the second boundary line has a concave curvature, and
• wherein the spatial area occupied by the operating elements extends, at least to a first approximation, in a plane (T) which encloses an angle (α) of between 20° and 65°, preferably between 30° and 60°, with a center plane (M) of the manual pulling instrument which extends symmetrically with respect to the bellows between the first housing part and the second housing part when the bellows is in a folded state.