WASHINGTON-- Nothing is off limits, not even President Barack Obama crooning a few bars of "Sweet Home Chicago."

As Obama hits Miami in the battleground state of Florida for an economics speech and fund-raising on Thursday, the Republican National Committee slams him on the rise of gas prices in a video targeted to a Miami audience.

NEW POLITICAL PAID MEDIA ALERT: The RNC is doing an ad buy for this video--not on cable to broadcast television, but on YouTube. The RNC bought a day-long ad buy "targeted to viewers watching news and politics content on YouTube in the Miami area."

The RNC video uses Obama singing a bit of "Sweet Home Chicago" at the White House Blues Night on Tuesday, taking a clip of that and morphing it into "Obama's Got America Singin' the Blues."

"Good morning, welcome to Miami Mr. President. Fifteen seconds is all it takes for the RNC to sing a different tune than the President. The online ad highlights how gas prices have increased from $1.85 to $3.59 in three years under Obama.