Thanks for stopping by. Two of the links above: How to Improve Your Flexibility Safely Into the Splits and Working Toward the Splits both offer some specific exercises that address the various muscle groups involved in splits.

Also, there’s the just do it method. In other words to stretch for splits you just do a split as best you can and gently, gradually, and with awareness get lower or deeper into the stretch. If you are not able to sit at all in a split, try deep lunges from standing or kneeling. Also look for any exercises that stretch the iliopsoas, the front of the hip, the hamstrings, and the lower back. I’m not sure where you are flexibility-wise – this makes a difference for which kinds of exercises will help. If flexibility in general is an issue for you, working flexibility all over may also help with splits. In this case you might try yoga (in addition to whatever dance you are doing).

Good luck!