PopuPiano is a modularized intelligent music keyboard that integrates musical creation of melody + chord + rhythm and the keys with color LED and chord pad. The APP wirelessly controls the keys to light up the stroke positions, the chord capsule makes coordination of left and right hands easier. With configuration of various chord and rhythmic patterns, you only need to click the capsule to trigger chord playing, which helps you understand music composition. The chord capsules can be combined into various functional modules to enable playing of various instruments.