Hamelin has also composed several works, including a set of piano études in all of the minor keys, which was completed in September 2009 and is published by C. F. Peters, with a recording released on the Hyperion label. A cycle of seven pieces, called "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 piano solo, he has also written three pieces for player piano (including the comical "Circus Galop" and "Solfeggietto a cinque", which is based on a theme by C.P.E. Bach), and several works for other forces, including "Fanfares" for three trumpets, published by Presser. His other works are distributed by the Sorabji Archive.