Music R&B

Which of these R&B groups is made up of two sets of brothers?

More Questions from Music R&B
What song won the 2019 Billboard Music Award for Top R&B Male Artist?
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Latavia Roberson is from which musical group?
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What R&B star had a small non-vocal part in the movie "Meteor Man" back in 1993?
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In what year was Smokey Robinson inducted into the Rock 'n' Roll Hall of Fame?
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What decade is the hit single "Superstition" by Stevie Wonder from?
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What R&B and pop singer is sister to the late Michael Jackson?
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What year did Marvin Gaye have the hit single "That's The Way Love Is" on Tamla?
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Ronald Isley sings with what group?
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