Suzuki M-20W Manji 10-hole wooden cover diatonic harmonicaIntroducing the Suzuki M 20W 10 hole harmonica with wooden cover plates Suzuki M 20W is a 10 hole harmonica with wooden cover plates. With the same powerful blow as the Manji M 20 but with wooden cover plates for a mellow tone, with the treble components suppressed. Like the other Manji models, the M 20W is tuned as "compromised tuning" that emphasises the resonance of the chords, which is useful in playing blues with many vamps. The wooden cover