Complex sentence: The first single, "Hallelujah", was released the day after she won "The X Factor", and its second single, "Bad Boys" featuring Flo Rida, was released in October 2009.
Split into simpler sentences: The first single, "Hallelujah", was released the day after she won "The X Factor". Its second single, "Bad Boys" featuring Flo Rida, was released in October 2009.