Looks like a musician's version of writer's block! Nice shot. It has a '20s/'30s feel to it. I'm afraid that I'm not familiar with Arnold. The composition is wonderful.
I like the light split in the left-hand third and the shadow projected by the framed pic.Nigel.
I'm glad you like it guys. The photo I was trying to copy is a lot starker. There's no picture on the wall and it's more contrasty. It's a photo of Stravinsky taken in 1946. It's brilliant - well worth a look.