Guess this BTS member

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Across
  1. 4. His original name
  2. 5. The name of one of his mixtapes
  3. 7. The American Singer he collaborated with recently
Down
  1. 1. ‘___’ Market - A show he did with one of his members on Vlive
  2. 2. This was his Stage name before he joined Bighit
  3. 3. A song he dedicated to a musical instrument
  4. 6. His birthplace