music theatre dancing

I'm a singer who has been auditioning for music theatre shows but am yet unsuccessful. I did ballet for 8 years during primary school but am now in my early 20's and haven't danced for quite some time, although I love it!

I am seriously considering dance classes to give me a fighting chance at being in a music theatre production/ getting a role.

Any advice as to what style of dancing would set me up best for dance auditions/music theatre shows? What sort of dancing experience is desirable to directors and choreographers? Can anyone recommend a dance school? (I live in Seaford (near Franskton) in Melbourne.)

Any advice or comments/encouragement would be greatly appreciated!