Vishal-Shekhar serve up a thrilling amalgamation of musical elements in this North-meets-South love story, Chennai Express. “One Two Three Four”—designed to make everyone ‘get on the dance floor’—is an unrelenting banger with street-style lyrical grit to match the film's brisk action-comedy. The album also boasts a rap ensemble in the thumping hip-hop and EDM crossover, “Ready Steady Po”—even S. P. Balasubramanyam gets in on the action, rapping on the pumped-up Hinglish title track “Chennai Express”.