A group of us went late on Sunday afternoon and had an excellent time. It was fairly empty when we arrived, but the sun was still out in full force - as the evening progressed the place filled up. A Mass of beer was €6.50 plus €5 deposit (they were also selling something pink that turned out to be rhubarb schorle/spritzer).
The band performed from just after 5.30pm till 10.15pm and covered mostly international songs, including Swing numbers & the Blues Brothers, followed by a medley of German-language hits (e.g. 99 Luftballons, Major Tom, Amadeus), finishing the evening off with classic rock. Basically a lot of the songs you get to hear at the Oktoberfest, without the oompah music in-between.
Where we were sitting everyone was singing along, and by the end people of all ages were dancing at the front. We thought it was much better than some of the other street festivals this year, but I suppose it just depends on individual taste (and the beer was good).