Tim Kaine

DENVER -- Maryland Gov. Martin O'Malley informed the Arizona delegates to the Democratic National Convention of a hidden talent Gov. Janet Napolitano possesses - she can play a mean tambourine.

O'Malley, Napolitano and a couple of other state executives had a jam session at the DNC gubernatorial caucus Wednesday night. The line-up included Virginia Gov. Tim Kaine on harmonica and O'Malley on guitar. Montana Gov. Brian Schweitzer filled the room's prescription for cowbell, and rounding out the rhythm section was Arizona's own Napolitano.

"She wasn't rolling her eyes [while playing] - she put herself into it. Did a good job," said O'Malley of his ersatz band's tambourinist. Overall, O'Malley gave the group decent marks.

"Like the Patridge Family, but over the hill," was how he characterized them. "We had a good ol' time."

The fourth and final day of the Democratic National Convention will be called to order at 5:00 PM EST on Thursday, with a theme of "Change You Can Believe In."

The final day's events will take place at INVESCO Field at Mile High, where over 70,000 people are expected to attend.

Featured speakers will include Colorado Gov. Bill Ritter (D), former Vermont Gov. and Democratic National Committee chairman Howard Dean (D), New Mexico Gov. Bill Richardson (D), U.S. Rep. and U.S. Senate candidate Mark Udall (D-Colo.), Virginia Gov. Tim Kaine (D), former Vice President Al Gore (D) and U.S. Sen. Dick Durbin (D).

U.S. Sen. Barack Obama (D-Ill.), the Democratic presidential nominee, is scheduled to address the convention at 10 p.m. EST.

The full schedule is below.