Hey Dennis, thanks for your note. Social networks like this are a good place to start. Also, you could try posting a notice in a publication like the Dramatist Guild's magazine, or American Theater. And, if you can, you should try to get involved in a workshop like the BMI Musical Theater Workshop, a great place to learn and to meet other writers. In general, the more you expose yourself to the musical theater scene, the more likely you are to find artists whose tastes, styles, and interests mesh with your own.

Best of luck.