Later, influences from the Roman Empire, Eastern Europe, and the Byzantine Empire changed Greek music. The Seikilos epitaph is the oldest surviving instance of a whole musical composition, including musical notation, from anywhere on the earth.
Simple classical items and plenty of pop and traditional music songs are written so that each one the music is in a single key. More complicated Classical, pop and traditional music songs and items may have two keys (and in some cases three or extra keys). Classical music from the Romantic era (written from about 1820–1900) usually incorporates multiple keys, as does jazz, particularly Bebop jazz from the Forties, in which the key or “house notice” of a music may change every four bars and even every two bars. When musicians play three or more different notes at the similar time, this creates a chord. In Western music, including classical music, pop music, rock … Read More