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From the liner notes

"Just put your lips together and blow!" Well, that's easier said than done, as this exploration of the high-stakes world of competitive whistling reveals. Pucker Up follows several competitors as they converge on Louisburg, NC - the mecca of whistling - for the International Whistling Convention and Competition. Seasoned veterans and nervous amateurs alike perform for their chance to be named the world's best whistler in a unique atmosphere of tense competition and convivial camaraderie. Exploring the history and former glory of the pasttime, even the dark underbelly (who knew?) of the whistling world, this delightful film communicates whistling enthusiasts' hopes of reviving the once-popular entertainment now all but absent from the cultural radar.