A detection device according to an embodiment includes a casing, a fastener that is included in the casing and removably fixes the casing to a pedal for assistance for playing a piano, and a sensor that is included in the casing and detects an attitude of the casing. A detection method according to the present disclosure is executed by a processor, and the method includes a calculation step of calculating a pedaling angle of a pedal for assistance for playing a piano, on the basis of an output from a sensor of a detection device including a casing, a fastener included in the casing to removably fix the casing to the pedal for assistance for playing the piano, and a sensor included in the casing to detect an attitude of the casing.

A detection device according to an embodiment includes a casing, a fastener that is included in the casing and removably fixes the casing to a pedal for assistance for playing a piano, and a sensor that is included in the casing and detects an attitude of the casing. A detection method according to the present disclosure is executed by a processor, and the method includes a calculation step of calculating a pedaling angle of a pedal for assistance for playing a piano, on the basis of an output from a sensor of a detection device including a casing, a fastener included in the casing to removably fix the casing to the pedal for assistance for playing the piano, and a sensor included in the casing to detect an attitude of the casing.

An instrument stand includes a connector configured to fix a horizontal spanning member and including an instrument attachment portion, a pedal frame fixing portion, and a leg attachment portion.

An instrument stand includes a connector configured to fix a horizontal spanning member and including an instrument attachment portion, a pedal frame fixing portion, and a leg attachment portion.