The Boston Modern Orchestra Project (BMOP), the nation’s premier orchestra dedicated exclusively to commissioning, performing, and recording new orchestral music, continues the festivities for John Harbison’s 80th year with a matinee concert dedicated to the distinguished Pulitzer Prize-winning American composer. Led by Artistic Director and Conductor Gil Rose, BMOP celebrates Harbison in a program featuring Harbison’s Remembering Gatsby (Foxtrot for Orchestra), Concerto for Viola and Orchestra, and celebrated soprano soloist Dawn Upshaw singing his Milosz Songs and his Symphony No. 6.