Opera, ballet and so on) are given a fair amount of space today with entries bracketed by BWAY (1D. N.Y.C. theater district, for short) and the LOOP (13D. Chicago district, with “the”); ARIAS (38A. Andrea Bocelli deliveries); TOSCA (64A. Puccini opera) ; SCAT (6A. Sing like Ella Fitzgerald); 22D. “ IRMA la