A geographical subgenre earmarked by a more relaxed, swinging feel than other styles of blues, Texas Blues encompasses a number of style variations and has a long, distinguished history. Its earliest incarnation occurred in the mid-'20s, featuring acoustic guitar work rich in filigree patterns -- almost an extension of the vocals rather than merely a strict accompaniment to it. This version of Texas blues embraced both the songster and country-blues traditions, with its lyrics relying less on affairs of the heart than other forms. The next stage of development in the region's sound came after World War II, bringing forth a fully electric style that featured jazzy, single-string soloing over predominantly horn-driven backing. The style stays current with a raft of regional performers primarily working in a small combo context.