A fun rogue subclass centered around dancing and movement, with some interesting mechanics, especially momentum. However, one wonders if this concept would have fit better as a bard subclass, instead of a rogue option. (Plus, the 13th level mechanic - while cool - might be a little underpowered.) The product also includes a Dancer feat (which feels like a condensed version of the subclass), and four very neat and flavorful dancing-related magical items (the Boots of Musical Movement are especially fun). The product may be slightly overpriced, however ($1.95 for two pages of rules content), so you may wish to wait for a bundle or sale.