Sounds of the city

I have started working on an entry to the AOI (Association of Illustrators) Prize for illustration 2017 and came up with this sketch. The theme is "Sounds of the City - an illustrated interpretation of sound". The competition is run in conjunction with the London Transport Museum.

A swarm of motor scooters roaring through a railway arch, a tube train rumbling overhead and pigeons flapping for their lives, says "London" to me.

This is a tiny pencil sketch 6 x 3.5cm with colour added in Affinity Photo.