meditation

I had an amazing experience last night. I was learning a meditation and while doing it I was so involved in the joyousness of it that everything around me melted away. Even though I was later told that I didn't actually move very much I felt as if I was undulating with wild abandon and within myself there was loads of power.  What I found coolest though was the fact that I wasn't alone, inside the meditation world there were other women all happy and dancing and singing and loving. I'm not sure how to say it without making it sound as if I were hallucinating, hmm maybe I was but if so it was really pleasant. :)  Curious though how one can hear colors and experience singing when there is no sound...