Swedish recording artist Agnetha Fältskog, who reached international fame as a member of ABBA, disappeared off the face of the earth after the band broke up in the 1980s. Fältskog moved to a remote Swedish island, isolating herself from the very public life she once led. "I didn't sing at all for 13 years. I didn't even have a hi-fi at home. I never wanted to play another record again. I developed a microphone phobia," Faltskog told the Sun-Herald in 2005. "It shapes your whole personality and led to me developing phobias." —XFINITY Entertainment Staff (Photo by Steve Wood/Hulton Archive/Getty Images)
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