This small reed organ has a double row of pistons along the centre of the top, which control free reeds. You press down on the double bellows in a rocking motion with your left elbow or the heel of your left hand, while your right hand controls the pistons. Also known as the rocking melodon or elbow organ. This model likely dates from the first half of the nineteenth century when lap organs were quite popular in the United States. Range of pitches: c to c". Length, 44.8 cm; width, 14 cm; depth, 10 cm.