Maryland Gov. Martin O'Malley performs with his band during a St. Patrick’s Day reception in the East Room of the White House in Washington on Tuesday. (AP Photo/Susan Walsh)

The planned appearance comes in the closing weeks of a busy legislative session during which O’Malley has generally curtailed his political travels as chairman of the Democratic Governors Association.

O’Malley, who has drawn flak in Annapolis for his out-of-state appearances, has several key agenda items still hanging in the balance.

An aide said O’Malley agreed to appear in Hartford at the 64th Annual Jefferson Jackson Bailey Dinner at the invitation of Connecticut Dannel P. Malloy (D). O’Malley has known Malloy since the two were mayors of Baltimore and Stamford, respectively.

Tickets for the dinner start at $175.

As DGA chairman, O’Malley has become a regular on the national party dinner circuit, frequently criticizing the performance of Republican governors and touting President Obama’s record.

The Maryland governor also got some national attention Tuesday night, appearing with his Celtic rock band at a reception at the White House.