Maryland Gov. Martin O’Malley (D), who is weighing a 2016 presidential bid, spent part of his Memorial Day doubling as a street musician in downtown Annapolis.

As captured by photos on Twitter, O’Malley played a six-string banjo at City Dock on Monday night, wearing a Baltimore Ravens T-shirt, cargo shorts and flip-flops. He appeared to accept tips in his open banjo case.

Aides confirmed the authenticity of the photos — including one captured by Eye on Annapolis — but offered nothing on the record as to what possessed the governor to play.

O’Malley has been the frontman of a Celtic rock band since his days as a city council member in Baltimore in the 1990s. His band, O’Malley’s March, still plays several concerts a year, though it curtailed its schedule considerably after O’Malley started running for governor in 2006. His advisers were concerned at the time that the band detracted from O’Malley’s gravitas.

In the band, O’Malley sings and plays acoustic guitar — and occasionally banjo.

One of the band’s more notable gigs took place two years ago as part of an extended St. Patrick’s Day celebration in the East Room of the White House.