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One of the biggest pop music acts of
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One of the biggest pop music acts of the 1970s, and arguably the first-ever "boy band," Jackson 5 was formed of five brothers from Gary, Ind., in 1964. The group played a repertoire of R&B, soul, pop and disco, and launched the solo careers of Jermaine and Michael Jackson. Jackson 5 was one of few groups in music history to have their first four singles reach the top of the Billboard Hot 100, according to MTV.(Credit: AP)

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One Direction, 'NSync & more hit boy bands

1960s all-male groups The Jackson 5 and The Monkees paved the way for boy bands including New Kids on the Block, the Backstreet Boys and today's hottest group, One Direction. Take a look at some of the most successful boy bands of all time.