Low left many of the fans of Rock the Garden puzzled by their one-song set, consisting entirely of "Do You Know How to Waltz?" The performance was lumbering, droning and... divisive.

Slideshow: Metric at Rock the Garden

Slideshow: Silversun Pickups at Rock the Garden

Slideshow: Bob Mould at Rock the Garden

Slideshow: Dan Deacon rocks the underground garage

Slideshow: Scenes from Rock the Garden

Andrea Swensson's set-by-set Rock the Garden recap