Washboard (musical instrument) captured by a small clip-on microphone. The sound is then sent through a wah-wah and other effects pedals to create a fresher, more innovative and up-to-date sound for the washboard. A frottoir is played with a stroking instrument (usually with spoon handles or a pair of bottle-openers) in each hand. In a 4-beat measure, the frottoir will be stroked 8 to 16 times. It plays more like a Latin percussion instrument, rather than as a drum. The rhythms used are often similar to those played on Guiro. Actor Deryck Guyler was well known for his washboard-playing skills. Washboard (musical instrument)
Recorder (musical instrument) In recorders, like in all woodwind instruments, the air column inside the instrument behaves like a vibrating string, to use a musical analogy, and has multiple modes of vibration. These waves produced inside the instrument are not longitudinal waves, like those the ear perceives as sound, but rather stationary standing waves consisting of areas of high pressure and low pressure inside the tube, called nodes. The perceived pitch is the lowest, and typically loudest, mode of vibration in the air column. The other pitches are "harmonics", or "overtones". Players typically describe recorder pitches by the number of nodes in the