The American minstrel show consisted of comic skits, variety acts, dancing, and music, performed by white people in blackface or, especially after the American Civil War, black people in blackface. Minstrel shows toured the same circuits as opera companies, circuses, and European entertainers, with venues ranging from lavish opera houses to makeshift tavern stages. When the European Tyrolese Minstrels toured the United States for several years in the early 1840s and created an American craze for Alpine yodeling music, four unemployed white actors decided to stage an African-American style spoof of this group's concerts. Calling themselves Dan Emmett's Virginia Minstrels, the performance was wildly popular and most historians mark this production as the beginning of minstrelsy in the U.S. According to jazz historian Gary Giddins: