This is possibly the hardest achievement in the game. There are 10 routines in the game and each one is a small looped portion of a song. They last about 2 - 3 minutes. Find one that you like and are good at and set the difficulty to Hard. Now practice or train for the routine until you can make it. The earlier tiers have fewer advanced movements but are set to a slightly slower tempo which may actually be more difficult for some. Play whichever song you are most comfortable with. Of course you can train on hard to help nail the routine.