Traditional harmonicas were made of wood while modern versions of the instrument are made of plastic or metal. The reed plate is the collective name for reeds in one panel. Reeds could be made of steel, brass, plastic, or aluminum. Windsavers are valves used in instances wherein two reeds are in the same cell and there is frequent unnecessary air passage through the non-playing reed. Sound waves are created coming from the back and front panels as the soundboard is vibrating. The sound box serves as a resonant cavity and reflects the sound waves produced. The sound volume increases greatly compared to the primary volume created by the strings. Some sound is then projected out of the hole. Moisture tends to build up in the horn when playing the sax. This will make the leather pads rot and the brass to rust. Make sure that you remove as much moisture as you can every after playing. After playing, you should dismantle the different parts of the saxophone the mouthpiece and the neck. Use a neck swab to clean the neck. The harpsichord family There are various members of the large harpsichord family archicembalo, virginals, ottavino, clavicytherium, spinet, folding harpsichord, and the regular harpsichord. The archicembalo had a unique keyboard design and was for the tuning systems of the 16th century. The virginals is a simpler and smaller harpsichord with only a string for every note while the ottavino are similar to virginals but are at four foot pitch. Also, the Greeks played the krotola in religious affairs but it is proven that castanets were also found in Italian, Latin, and Portuguese music among many others. Use of the Castanets Castanets are dominant in music for dances in the baroque period. These were score for dancing music by composers such as Jean-Baptiste Lully. By 1850, it has fallen out of its popularity and out of use. Fortunately, the clavichord was revived by Arnold Dolmetsch in the 1890 s. Before 1730, clavichords were created small with four octaves and a length of approximately four feet but nowadays, these are made with a length of up to seven feet.