Wow - I've been in that exact same spot and I think with the exact same busker. Huh. I like it - the slight green cast to the image enhances rather than detracts from the overall impact.
Love it. The dissonance between the lonely man up and the happy folk taking their photos and forgeting all about it. The black & white is very effective
I like this. The hint of green in the color is throwing me off. I also think if the people/background were slightly less in focus it would have made for a better picture. But good shot overall.