The Waterloo Athletic Booster Club is holding a “dueling pianos” event this Friday, May 12, at Sugar Spring South, 1365 Route 3, Waterloo. Doors open at 7 p.m. with music from 8-11 p.m. Tickets must be purchased in advance at whsathleticboosterclub.org, or by calling 314-401-7092 or 618-792-9518.