On Dec. 11 and 13, the Rockford High School choirs and bands will present their annual Collage Concerts. This a great way to enjoy a variety of holiday music presented by Rockford’s very talented choir and band students. They are presented in collage style, with one group performing right after another, without interruption. The performances are scheduled for: Friday, Dec. 11, at 7 p.m., and Sunday, Dec. 13, at 2 p.m. and 4 p.m. The public is invited to attend these free performances, but tickets are required. Those who wish to attend may pick up free tickets at the Rockford High School Ticket Booth, located just inside the Fine Arts entrance, Tuesday through Friday, Dec. 8-11, between the hours of 10 a.m. and noon.