Yoko Ono has joined the chorus in support of gay marriage by recording "Every Man Has a Man Who Loves Him," a gay-friendly version of a song she wrote nearly a quarter-century ago. The song "Every Man Has a Woman Who Loves Him," included on her last album with John Lennon before he was killed in 1980, was also retooled into another version: "Every Woman Has a Woman Who Loves Her." It's both a political statement and a tribute to an audience that has improbably made her a hit act in the dance clubs at age 71. "I should think...