The country blues singers usually accompanied themselves on the:

Some of the best-known country blues singers of the early period were Big Bill Broonzy, Robert Johnson, Blind Lemon Jefferson, and:

The second period, beginning in 1930, is divided between singers and:

The instrumentalists, many of whom also sang, were the great Louis Armstrong, Jack Teagarden, and:

The most important names from that era were Ma Rainey, Mamie Smith, and the most famous of all:

By about 1900 the blues had developed into a standard musical form of about:

The early 19th century is usually divided into two basic styles - country (or rural blues), and:

In African tribes, people sing songs about:

The singers in the 2nd time period include artists such as Joe Turner, Jimmy Rushing, Joe Williams, and: