This person who was a famous writer of piano music was known as the the 'King of Ragtime'?

Scott Joplin (between July 1867 and January 1868 - April 1, 1917) was an Afro-American composer and pianist, born near Texarkana, Texas, into the first post-slavery generation. He achieved fame for his unique ragtime compositions, and was dubbed the "King of Ragtime." During his brief career, Joplin wrote forty-four original ragtime pieces, one ragtime Ballet, and two operas. One of his first pieces, the Maple Leaf Rag, became ragtime's first and most influential hit, and remained so for a century.