Ballet Based Programs

Came across the Ballet Physique on Amazon..I am currently just started Jillian's Ripped in 30 (after completion of her shred) and am hybriding it with her Yoga Inferno.

I used to do ballet when I was a child..and lately have had an itch to try it again..can anyone reccomend a good ballet based program that is a good work and still keeps to the core of it being ballet/dance based?