The cowbell, modeled here by Swiss bovine Sophia, is, in many ways, rock and roll's secret weapon. Sometimes, it's just what a song needs to go from good to great. Credit: Photo by Maria Feofilova.

CALEDONIA, Wis. - Some of the most sought-after handcrafted cowbells in the country are made in a Caledonia garage by the hands of Ulisis Santiago – or "Uli," as he is known to his close friends.

Have you seen the new iPhone application "More Cowbell?" Simply download the free app to add glorious clanking cowbell sounds to any song playing on your iPhone. Simple, clean, and oh-so entertaining.