Hrvatska Croatian Singing Society of Chicago will present the comic opera "Uzdencu" (In the well), Sunday, January 29, in the Croatian Hall in Gary, Indiana,and it will sing folk songs over radio station WJKS, Gary, Indiana, Ja uary 15, 22, 1929 from 2:45 to 3:00 P. M. Due to the short time allotted on the air they cannot sing operas.