But for one special 12-year-old, the answer was more than just practice. First, he had to beat cancer.
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Daniel Colaner made his Carnegie Hall debut Sunday night.
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The Ohio native was diagnosed with stage 4 neuroblastoma when he was an infant.
At one point he was given a 25-percent chance to live.
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But he used the piano as part of his treatment. "I never imagined getting here," he said.
Daniel has been in remission for more than a decade.
He also plays the organ. He has one in his home that he built himself.