The invention relates to a method for producing a metal sound instrument of a steel pan type, particularly for producing a Hang®. According to the method, the steel sheet required for production having a thickness of 0.7 mm to 1.25 mm is nitrided until the sheet is fully permeated by iron nitride needles. The linear density of the needles is generally between 40,103 m-1 and 80,103 m-1. The type of nitriding can be freely selected. The instrument so obtained is characterized by novel sound tones.