Toward Dusk is an arrangement of the last movement of Hilary Tann's Water's Edge, a piano duet for advanced students commissioned by the 1993 New York State Music Teacher's Association Conference. The "edge" of the original title refers to the upper surface of the water as it reflects or refracts light. During the piece, echoes of the previous two movements ("Dawn Light" and "From the Riverbed") are heard as the light gradually fades from view. Towards Dusk was premiered on 6 May 2001 in Saratoga Music Hall, Broadway, Saratoga Springs, New York, by the Saratoga Springs Youth Orchestra conducted by Lucy Joseph.