four-row keyboard
61Harpsichord — in the Flemish style Bach s Little Prelude in C major being played on a harpsichord. A harpsichord, also known by the name cembalo, is a musical instrument pla …
62Petra (band) — Petra The members of Petra before the band retired in 2006 (l r): Paul Simmons, John Schlitt, Bob Hartman, Greg Bailey Background information Origin …
63musical instrument — Introduction any device for producing a musical sound. The principal types of such instruments, classified by the method of producing sound, are percussion (percussion instrument), stringed (stringed instrument), keyboard (keyboard… …
64Linotype machine — The Linotype machine (pronounced Line O Type [IPA| laɪnəˌtaɪp] ) is a line casting machine used in printing. The Linotype machine operator enters text on a 90 character keyboard. The machine assembles matrices , which are molds for the letter… …
65Numbered musical notation — The numbered musical notation, better known as (simplified Chinese: 简谱; traditional Chinese: 簡譜; pinyin: jiǎnpǔ; literally simplified notation ) in Chinese, is a musical notation system widely used among the Chinese people. Some people call it… …
66Command key — The Command key The Command key, also historically known as the Apple key, open Apple key or meta key is a modifier key present on Apple Keyboards. The Command key s purpose is to allow the user to enter keyboard shortcut commands to GUI… …
67Accordion — Infobox Instrument name=Accordion names=Accordeon (Danish, for free bass models), Akkordeon (German), Accordéon (French), Bajan (Russian), Fisarmonica (Italian), Harmonijka (Polish), Harmonika (Danish (for standard bass modelsDyremose, Jeanette… …
68MC Hammer — Hammer at TechCrunch in July 2008 …
69Touchscreen — A boy is solving a computerized puzzle using a touchscreen. A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the… …
70Classical music — Montage of great classical music composers. From left to right: Top row – Antonio Vivaldi, Johann Sebastian Bach, George Frideric Handel, Wolfgang Amadeus Mozart, Ludwig van Beethoven; second row – Gioachino Rossini, Felix Mendelssohn, Frédéric… …
