Hamelin has given recitals in many cities. His festival appearances have included Bad Kissingen, Belfast, Cervantino, La Grange de Meslay, Husum Piano Rarities, Lanaudière, Ravinia, La Roque d’Anthéron, Ruhr Piano, Halifax (Nova Scotia), Singapore Piano, Snape Maltings Proms, Mänttä Music Festival, Turku and Ottawa Strings of the Future, as well as the Chopin Festivals of Bagatelle (Paris), Duszniki and Valldemossa. He appears regularly in both the Wigmore Hall Masterconcert Series and the International Piano Series at London’s South Bank Centre. He plays annually in the Herkulessaal in Munich and has given a series of recitals in Tokyo.
Hamelin has also composed several works, including a set of piano études in all of the minor keys; completed in 2009, it is published by C. F. Peters, with a recording released on Hyperion. A cycle of seven pieces, Con Intimissimo Sentimento, was published (with a recording by Hamelin) by Ongaku No Tomo Sha; and a transcription of Zequinha de Abreu's Tico-Tico No Fubá has been published by Schott Music. Although the majority of his compositions are for solo piano, he has also written three pieces for player piano (including the comical Circus Galop, Pop Music for Player Piano based upon "Pop Goes the Weasel", and Solfeggietto a cinque, based on a theme by C.P.E. Bach), and several works for other instruments, including Fanfares for three trumpets, published by Presser. His other works are distributed by the Sorabji Archive.
In 1985, Hamelin won the Carnegie Hall International Competition for American Music; he made his recital debut at Carnegie Hall in 1988. In 2004, Hamelin received the international record award in Cannes. He has been made an Officer of the Order of Canada and a Chevalier de l'Ordre national du Québec (National Order of Québec). He has won seven Juno Awards, most recently in 2012 for Classical Album of the Year: Solo or Chamber Ensemble, for his Liszt Piano Sonatas album.[6]
Writing in The New Yorker in 2000, senior critic Alex Ross said: "Hamelin’s legend will grow—right now there is no one like him."[7] Later in 2010, Ross added that Hamelin was ranked highly by piano connoisseurs, and "admired for his monstrously brilliant technique and his questing, deep-thinking approach."[8]
In 2015, Zachary Woolfe, classical music editor of The New York Times, noted Mr. Hamelin's "preternatural clarity and control, qualities that in him don’t preclude sensitivity [or] even poetry".[9]
Hamelin's first marriage was to soprano Jody Karin Applebaum. He currently lives in Boston, Massachusetts, with his second wife Cathy Fuller, a pianist and WGBH classical music broadcaster. Hamelin has Type 1 diabetes.[10]