QRS Music Technologies, Inc. is an American company that makes modern player pianos. It was founded as Q•R•S Music Company in 1900 to make piano rolls, the perforated rolls of paper read by player pianos to reproduce music. The company also produced shellac records in the 1920s and 1930s and radios beginning in the 1920s. Today, it makes modern, digital variations on the player piano and the recordings to drive them. Wikipedia