[citation needed] First performances by McGuire include works by Ross Edwards, Anne Boyd, Barry Conyngham, Alessandro Solbiati and Liza Lim.
Artists with whom he has worked and recorded include Riley Lee (shakuhachi); Patricia Pollett (viola); and Jane Edwards and Merlyn Quaife (sopranos).
In 2011 he recorded Eugene Goossens' Concerto Piece for oboe and two harps with the Melbourne Symphony Orchestra, conducted by Sir Andrew Davis, for Chandos.
[citation needed] In 1998, with Lyle Chan, he co-created A Tale of Two Cities, a radio feature broadcast on ABC Classic FM, which was a monologue based on the lives of such gay composers as Ned Rorem, Leonard Bernstein, Samuel Barber, Virgil Thomson, Aaron Copland, Paul Bowles, Francis Poulenc, Stanley Bate and Reynaldo Hahn.
Composer + Citizen featured performances by Heath Quartet, Roomful of Teeth, Anthony Marwood, Siobhan Stagg, Ludovico's Band, and the Australian premiere of Lembit Beecher and Hannah Moscovitch's I Have no Stories to Tell You.
[citation needed] In 2003 McGuire was awarded an inaugural creative fellowship from the State Library Victoria to research the works of Peggy Glanville-Hicks.
The fellowship enabled him to produce piano reductions of Glanville-Hicks' Letters from Morocco and the final scene from the opera Sappho, and a new edition of the Sonata for Harp.
He was the inaugural curator of the Utzon Music Series from 2006 until 2011 at the Sydney Opera House, and in December 2006 was appointed executive manager, artistic planning, with the West Australian Symphony Orchestra.