Rock River Rapids is hosting a mid-afternoon concert featuring Auburn at 1:30 p.m. today. Auburn's hits include "La La La," "All About Him" and "Perfect Two." Most recently, Auburn was the opening act for Jason Derulo. The concert is free with regular park admission, $9 for adults, $8 for ages 3-17. Visitors are welcome to use the park during and after the concert. Gates open at 12:30 p.m.