instrument
塤 centers on a specific musical instrument: an ancient clay wind instrument, often translated as an ocarina-like vessel flute. The given meaning 'instrument' is a broad label for this particular object.
塤 combines 土 (earth, clay) with 員, which likely provides the sound. The character refers to a clay wind instrument, reflecting the material (earth) and the phonetic element.
The left side 土 (earth) suggests clay, and the right side 員 looks like a round vessel with a mouth. Picture a clay ocarina made from earth, shaped like a round container with a blow hole.
For ケン, imagine a musician named Ken playing a clay flute: Ken -> ケン, and the earthy instrument produces a haunting sound.