Tunable Piano Chord Judge

Press the key on the piano to judge the chords. Nyanyan [Tuning Sound] Tune the sound by MANY KNOBS such as VOLUME, REVERB, DELAY, DISTORTION, FILTER. [Explanation of symbols for code judgment] ◎: Exact match. ○: There is a shortage of one sound. △: Two sounds are insufficient. ×: Three lack of sound. What? : There are insufficient 4 or more sounds, or there is extra sound 【Hold function】 You can hold down the key when you press the key. If you press the same key a second time, the key will be released. All will be canceled with the Reset button. 【Inv function】 Judge the inversion chord. 【Others】 · It is possible to connect to a MIDI keyboard compatible with Bluetooth. · The keyboard can display up to 1 to 3 octaves. · You can choose the tone colors, piano, marimba and bass so on.