Jason Aldean has scored his first No. 1 single with "Why," the second single from his self-titled debut album for Broken Bow Records. John Rich of Big & Rich co-wrote the song with Vicky McGehee and Rodney Clawson. Rich, McGehee and Big Kenny were co-writers of Aldean's first single, "Hicktown," that peaked at No. 10 in October. Aldean will perform this week in Louisiana, Florida, Georgia and Alabama before heading to Las Vegas for an appearance on the ACM Awards show on May 23.