A quick sketch from yesterday

Quite a while ago I found this technique to create water color effect in Photoshop.So sometimes when I don't have any water color tools with me ( like in the office ) I still can do a bit of water color quick sketch. 
Last night Jerry and I were discussing about how to draw anything without reference, I did my best today to draw something just from memory about how that Spanish restaurant looks like. and Yes, there really was a guy sitting on a very very tall platform doing Guitar performance, I didn't made that up although it looks bit odd...