Background Info

When doing my research a question came to my head.
What is music? I found out that music is like an art of sound in time that expresses ideas and emotions in significant forms through rhythm, melody, harmony, and color.
When did music start? Well in ancient Israel a thousand years before Christ, King David composed and sang hundreds of songs called psalms. A few of the songs are in the old testament in the book of Psalms.
But the music we know now, may have began in the 10th century with the Gregorian chants. These chants were  organized and detailed and were in small groups that sang distinctive parts.
Common rhythm notation began around the year 1200 and soon after, troubadours singing “folk” music starting to appear in parts of Europe. In the 14th century, sacred music was quite common but secular music had begun also. During the renaissance one of the most significant events occurred the birth of a composer. The appearance of composers spawned instrumental music and created instruments such as the piano and lute.
From the year 1750 to 1820 is considered the Classical period with the piano being a composer’s instrument of choice. During this time, Mozart wrote his first symphony, Bach performed in London, and Beethoven was born. Many of the symphonies we enjoy today were written during this time. 
By the year 1900, Scott Joplin had composed and published the “Maple Leaf Rag,” an event many see as the beginning of the music we know today as popular music.  
Soon new musical forms were taking hold. Jazz began around the 1930s (Louis Armstrong, Billie Holiday), big band music in the 1940s (Tommy Dorsey, Duke Ellington). Also Rock-and-Roll (Elvis Presley, Chuck Barry) in the 1950s. Other countries like France and Spain were creating their own popular music during this time although their music was not as vibrant and as influential as the music happening in the U.S.