Pop group Dnce are set to perform on a Royal Carribean cruise before the solar eclipse in August (17).

Joe Jonas' band will headline the Total Eclipse Cruises' solar eclipse viewing party on the Oasis of the Seas ship and will hit the stage with a surprise guest.

The solar eclipse will take place on 21 August (17).

"When we were invited to headline this once-in-a-lifetime event, we didn't think twice. What could be more out of this world than witnessing a full solar eclipse at sea?" Jonas says.

"We're stoked about coming back on board with Royal Caribbean to put on a lights-out performance with a very special guest. It's beyond exciting to be able to celebrate this crazy moment in history out in the middle of the ocean."