Down is an R&B-electropop song by British artist Jay Sean. The song was released in North America as his debut single from his first album there, All or Nothing. In other markets, including the United Kingdom, the song serves as Jay Sean’s lead single from his third studio album. The single features American rapper and label mate Lil Wayne and is produced by J-Remy and Bobby Bass. “Down” is the seventh-best selling single of 2009, having sold more than three million digital copies in the United States alone, and has been certified Platinum in several countries. The song went on to sell four million copies in the United States and six million copies worldwide, and also received a large airplay of two billion listener impressions on radio worldwide.