Darius Rucker will be the musical guest Monday night (Oct. 27) on NBC's The Tonight Show With Jay Leno. He will perform his No. 1 country single, "Don't Think I Don't Think About It." Rucker's solo debut album, Learn to Live, also debuted at No. 1 on Billboard's country chart. "This will be the first time I've had the opportunity to perform 'Don't Think' on a late night show, and I am thrilled to have this opportunity," said Rucker, who is best known as the lead singer of Hootie & the Blowfish. Rucker's current single is "It Won't Be Like This for Long."