Jay Sean and Lil Wayne co-wrote the song with Jared Cotter, Jonathan Perkins, J-Remy, and Bobby Bass. In fact, a remix had not been produced, but the song 'Down' which originally began recording in December 2008. It was rumoured that his first single in the US would be a remix of the single, ' Tonight' featuring Lil Wayne. And it's great to be accepted by the best in the game.'

He explained, 'It's always been a dream for me to sign to an American label. On 15 October 2008, at the MOBO Awards, Jay Sean announced that he had signed with the American hip hop record label Cash Money Records. It was also the best-selling single by a British and European male artist in North America since Elton John's ' Candle in the Wind' in 1997, and the first by a British Asian artist since Freddie Mercury in 1980. The song also made him 'the first UK urban act ever to top Billboard's Hot 100', and the first British act to have reached number one in the United States and not in the United Kingdom with a song since Seal's ' Kiss from a Rose' in 1995. This made Jay Sean the first British act to score a Billboard Hot 100 number-one single since Coldplay's ' Viva la Vida' in 2008, and the fourth British act overall in the 2000s decade. 'Down' hit number one on the Billboard Hot 100 chart in the issue dated 17 October 2009, unseating ' I Gotta Feeling' by The Black Eyed Peas after their 14-week reign at number one. The track was released to US radio on and digital retailers on 30 June 2009. The song went on to sell six million copies in the United States and received a large airplay on radio worldwide. Produced by J-Remy and Bobby Bass, 'Down' is the seventh-best selling single of 2009 and has been certified Platinum in several countries. In other markets, including the United Kingdom, the song serves as Jay Sean's lead single from his third studio album. The song was released in North America as his debut single from his first album there, All or Nothing. ' Down' is a song by British singer Jay Sean featuring American rapper and labelmate Lil Wayne.

Baby are you down by jay sean