Musical Group at Hershey Park

This trio performs at the Hershey park when we went there.  My son was very entertained with their cool moves.  We also watch a group where they  performed the song Uptown Funk but instead of saying Uptown Funk they were saying "Hershey Park" which was  unique. I wonder if the  one playing the guitar on that group uses d addario coated strings.  Whatever they use, they sure sounded great and they did  great!

Here's the video of the tree peanut guy drummers.