According to singer Frankie Palmer, everybody at the Jersey Shore was in a band 20 years ago. That was when he met keyboard player Jason Soltys and drummer Mike Watt. They realized how much they enjoyed playing together, left their prior obligations and created UnDisputed, a band that has been going strong for decades.

Watching these three warm up and tune their instruments before taking the stage at Nardi’s Tavern in Haven Beach Friday night, the years-long chemistry was evident as they wove…