For Encore Chorales: Women wear all black - dresses, shirts, tops (no sleeveless). Skirts and dresses should be tea length or long, with black hose and shoes. Men wear dark slacks and jackets, white shirt and tie (wild is good!), dark socks and shoes.
For Encore ROCKS: All wear dark (black) slacks or skirts and a brightl solid colored shirt/blouse or a bright solid colored scarf.
It's always best to double check concert attire requirements before specific concerts as there may be changes, e.g., when performing joint concerts with Encore Chorales, Encore ROCKS attired may be changed.