James Herbert Keenan (born April 17, 1964), known professionally as Maynard James Keenan or MJK, is an American singer, songwriter, musician, record producer, actor, author, and winemaker. He is best known as the vocalist for the rock bands Tool, A Perfect Circle, and Puscifer.\n', '

In addition to his music career, Keenan has ventured into fields such as acting, improvisational sketch comedy, and winemaking. He currently owns Merkin Vineyards and the associated winery Caduceus Cellars. Since rising to fame, he has been noted as being reclusive; however, he does emerge for the occasional interview and to support charitable causes.\n', '

James Herbert Keenan was born into a Southern Baptist family in Ravenna, Ohio, on April 17, 1964, the only child of Judith Marie (née Dougherty; November 22, 1943 – June 18, 2003) and Michael Loren Keenan (March 4, 1946). When his parents divorced in 1968, his father moved to Scottville, Michigan and Keenan would only see him about once a year for the next 12 years. His mother remarried, bringing Keenan into an "intolerant and unworldly household" where his intelligence and creative expression would be stifled.\n', '

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