Otamatone is an instrument in the shape of a note.
Play it by pressing the stem switch!
Parts

Stem Switch
Press anywhere on the black area to play notes. The lower the area the higher the note.

Head
Extremely cute and made of soft silicon. Press the cheeks to move the mouth.

Tail
No functionality but pretty cool. Can spin like a record (without the sound).
Playing Techniques

Push Technique
Play notes by simply pressing the stem switch.
* Unlike a touch screen you need to squeeze the stem with two fingers

Portamento Technique
Let your fingers slide for gradual note progression.

Wah-wah Technique
Move the mouth to change the sound.

Vibrato Technique
Shake the stem while playing a note to add vibrato.