Add this to the ever-growing list of outdoor music events you must attend: carillon concerts. A University of Wisconsin–Madison tradition since the bell tower was erected in 1936, on Bascom Hill overlooking Lake Mendota at 1160 Observatory Dr., the concerts are held regularly on Sunday afternoons throughout the year (the current series runs through May 1, with performances starting at 3 p.m.). And the musician responsible for wrangling more than 50 bells into a melodious sound? Lyle Anderson, who was appointed University Carilloner in 1986.