Republican presidential candidate Carly Fiorina impressed many last week during her first big-time presidential debate. The former CEO of Hewlett-Packard rocketed to second place in the polls behind Donald Trump after her performance.

Fiorina then showed voters that she had a lighter side as well during her appearance last night on "The Tonight Show Starring Jimmy Fallon." On "The Tonight Show," Fiorina serenaded Fallon with a song and discussed her primary opponents.

"When I started this race, no one knew who I was," Fiorina told Fallon.

"I started as a secretary, typing and filing for a nine-person real estate firm," Fiorina continued. "It's only in this country that you can go from being a secretary to the chief executive of the largest technology company in world, and run for president of the United States. It's only possible here."

Fiorina then discussed her fellow candidate Ben Carson's comments where he claimed a Muslim should not be the president.

"Well, I think that's wrong," said Fiorina. "It says in our Constitution that religion cannot be a test for office.

Fallon then lightened the tone and asked Fiorina about the songs she sings to her grandchildren and her Yorkshire terriers, Snickers and Max.

"I don't want to put you on the spot," Fallon told Fiorina.

"Do you want me to hum a bar or two," Fiorina asked.

The GOP candidate then sung a portion of the song to the tune of "Rock Around the Clock."

"My name's Snick, and I'm lazy /Please don't take a walk with me/ I'd rather stay right here at home instead/ I want to lie back down in my nice, warm bed," she sung.

Check out the clips of Fiorina on "The Tonight Show" below!