I did this little sketchbook portrait of my friend Mirko last Sunday.
He sat a few seats away from me at a choral concert last week. He was deeply concentrating on the music of Schumann and Tchaikovsky. He didn’t notice I was sketching him.
Those blurry pools of dark ink on his coat were done by first wetting the surface with the clear water brush and then applying a second water brush filled with black ink.
In addition to the two water brushes, my left hand held three water-soluble colored pencils: russet, brown and black. To avoid distracting people around me, I minimized all my hand and head movements. The tools are absolutely silent on the paper.