Better take your air guitar to New York on October 21. The seventh Hedge Fund Rocktoberfest is a gathering of hedge fund and finance folk playing rock and acoustic sets for a children’s medical charity. I don’t know whether it will be more like Glastonbury or the X-factor, but it sounds a hoot. Sponsor from afar, drop in if you’re over there, or get together with some mates and play a set yourselves.