Designed for children ages 2 to 12 years and Adults, The Duet is in many ways a hybrid of two different instruments combined into one elegant package. One side features aluminum keys, like those of the Piper, and plays notes from the C Major scale with a pure, ringing tone. The other side has fiberglass keys like the Merry, which are tuned to the A Minor key and produce a shorter, somewhat tropical tone like that sounds similar to a wooden instrument. Despite its range of notes and sounds, the Duet’s 18 keys are arranged in one straight line and are cleverly made to sound harmonious when played together. The instrument has two plastic-tipped mallets which are attached to its frame by coated steel cables. A single musician can use both sides and both mallets to produce one song with an interesting blend of notes, or, as the name suggests, two people can each operate one set of keys with one mallet to form a musical duo sharing a single instrument.