The instrument described is a clavichord.
Although not very popular nowadays, it was important between the 15th and the 19th century. In popular music, variations of it can be found in songs by artists such as Stevie Wonder and Bjork, but they mostly used the electric version of the instrument.
Opera is a large-scale music drama that is sung. It combines singing and instrumental music with poetry, acting, scenery, and costumes.
Many elements of spoken theatre, like scenery, costumes, and acting, are used in opera. However, the importance of song distinguishes opera from other dramatic forms. Almost everything is sung, and the music works in tandem with the singers. An opera, like a play, is performed on stage with outfits, landscapes, makeup, and so on. The plural of the Latin word opus, which means "work," is opera.
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Drums because you can beat on anything almost and get a sound
F-A-B-F
The lines would be EGBDF
and the spaces will always be FACE