Settling in New York City in 1958, John Solum launched an international solo and chamber music career.
Notable concert appearances include recitals at the Queen Elizabeth Hall in London, the Frick Collection in New York, and the Library of Congress in Washington, D.C.
He performed at the White House in Washington in 1970 for a presidential state dinner honoring the Prime Minister of Great Britain.
In 1973 he toured the United States, Bermuda and Canada under Columbia Artists Management as guest soloist with the English Sinfonia.
Aaron Copland wrote his "Duo for Flute and Piano" in response to Solum's request to compose a work in memory of his teacher William Kincaid.