Koyama covered jazz in Japan throughout the 1960s and 1970s, was an avid interviewer of New York jazz musicians in their homes and wherever they played, and then he became a producer of jazz albums. “By the end of his life, Mr. Koyama’s personal archive included close to 30,000 vinyl albums and CDs. He also retained a copy of nearly every issue of Swing Journal, hundreds of books, and cassette tapes of his interviews. He recently donated the archive to New York University.” – The New York Times