This 2 CD box set is packed with some pretty rare blues sides, most from the 1950's era, with the rest from the 60's. This set focuses mainly on 45 RPM singles pressed on small labels because they're so powerful and exciting sounding, as opposed to a full LP. A number of these performers did record albums but focusing on singles strips the music down to the essential blues. This is the down and dirty sounding electric blues from mostly lesser/unknown singer/guitarists balanced by tracks from a few well known performers as well.. Among the better known perfromers are Juke Boy Bonner, Lafayette "Thing" Thomas, Guitar Shorty, Ike Turner, Buddy Guy, Lonnie Brooks, Earl Hooker, and Homesick James.