Honky Tonk is a type of music that originated in the southern United States in the taverns, generally on their pianos, which were out-of-tune. Definition from The Wiktionary: http://en.wiktionary.org/wiki/honky-tonk (Noun) 1. (dated) A cheap nightclub
Honky Tonk music is sometimes referred to as "Hillbilly."
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2. (dated) The type of music typically played in such a club
3. A style of country music emphasizing traditional country instruments (e.g., guitar,
steel guitar and fiddle); a rough, nasal vocal style; and tragic themes