Spruce and Rosewood Thumb Piano
This thumb piano by Mid-East is made of rosewood and features a solid spruce soundboard, 17 steel keys and two vibrato holes on the back. It measures 5″ x 7″ in dimension, and is made in Pakistan.
The thumb piano originates in Africa and is also known as a “mbira”, “likembe”, and “kalimba” among many other names. The metal keys are mounted on a wooden box that acts as the resonating chamber.
To play, rest the thumb piano on the fingers of both hands and hold it between your palms. Cover the vibrato holes with your fingers. Then pluck the keys with your thumbs. As you play you can un-cover and cover the vibrato holes as you like. Many different tunings are acceptable, according to personal preference. Specific tuning of a thumb piano is only an issue when two instruments are played together; then they should generally agree in tuning. Otherwise, the tuning is subjective and should only be pleasing to the player.
The longer keys have lower pitches and shorter keys have higher pitches. The keys can be adjusted by tapping them in or out to adjust their length, and therefore their pitch.