I was in Venlo, south east Holland, late 2014 and got to experience Popronde. Over ten weekends, in 41 towns, 130 bands play in local bars and clubs. In the part of Venlo where I was staying, there were four bars within a minutes walk of each other, where a number of these musicians were playing. With staggered running times you could cruise from bar to bar taking in the atmosphere.
Lighting was tricky, but armed with my new Fujifilm X100s (and several glasses of Pilsner) I managed to grab the odd usable photo.