Two posts in one weekend! We were present at a short (free) concert by Nostos, the choir of the Oxford University Greek Society in the basement of Blackwells bookshop, amongst the philosophies of mind and science. I had a go at sketching the whole choir, but I missed the musical director (she never stopped moving) and the choir kept shuffling, so it was hard to tell who else I missed. After the music we ate pastries on a bench in the sunshine, and then took a cruise along the river to Iffley lock.