Labels:bulletin board | fence | person | reckoner | sky OCR: FACTS BOX NAME: SYNTHESIZER FAMILY Keyboards. KEYBOARDS PITCH RANGE: The entire audio spectrum COMPLETE MA TERIAL: Metal framework plastic RANGE casing and keyboard, containing electric components o various materials SIZE Variable: this example is 37 (93 cm long ORIGINS: The first synthesizer appeared in the USA in the 1960s CLASSIFICATION: Electrophone: an instrument that produces ItS sound by the oscillation t an electric curent and can only be heard through loud Ispeaker DID YOU KNOW? The synthesized "Switched on Bach one of the best- selling classical albums of all time Kevboards frarmework exampk synthe esizer inStt loudspeaker
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