Josh was the recipient of the Queen Elizabeth Silver Jubilee Scholarship as well as the Ontario-Quebec Exchange Fellowship. As a vocal accompanist, coach and repetiteur he has had the privilege of working with some of the finest singers in Canada including Theodore Baerg, Irena Welhasch Baerg, Mary Lou Fallis, Nathalie Paulin, Jackalyn Short, Sean Watson and Laura Whalen. He was the repetiteur for Orchestra London's presentation of Donizetti's L'Elisir d'amore in 2001 and  a repetiteur at the Banff Centre in 2002 and 2003 for the Opera as Theatre Program and for the Banff Centre production of Filumena by John Estacio. This past summer he premiered Songs of Wood and Water by Vancouver composer Dorothy Chang with soprano Khori Dastoor at Songfest in Malibu, California. In addition he was on Faculty as a vocal accompanist and coach at the Icicle Creek Summer Music Festival in the Cascade Mountains outside of Seattle. He performed there with such artists as mezzo-soprano Gayle Shay, soprano Juliana Gondek and violinist Maria Newman.

In March 2005, Mr. Grunmann performed with Monica Whicher in New York City. He returned to Songfest during the summer of 2005.