Rascal Flatts comprises Gary LeVox, Jay DeMarcus and Joe Don Rooney and is famous for songs like "What Hurts the Most" and "Bless the Broken Road".
The band from Ohio, which has sold nearly 23 million albums, will have the honours before Game three on Tuesday night, according to the official website of NBA.
While the 36-year-old singer who is known for his songs like "Yeah!", "OMG" and "DJ Got Us Fallin' in Love", will follow in Game four on Thursday.