Trinity College London Theory of Music Past Paper (2015) Grade 2 contains two past exam papers for Trinity College London's Grade 2 exam in music theory, from the May and November exam sessions of 2015. Ideal for use in theory exam preparation. Trinity College London Theory of Music Past Paper (2015) Grade 2 contains two past exam papers for Trinity College London's Grade 2 exam in music theory, from the May and November exam sessions of 2015.