Complex sentence: It was covered in 2003 by Trenyce, in 2008 by Syesha Mercado, in 2012 by Jessica Sanchez on American Idol, and in 2009 the song was sung by Rachel Adedeji on The X Factor (UK).
Split into simpler sentences: It was covered in 2003 by Trenyce, in 2008 by Syesha Mercado, in 2012 by Jessica Sanchez. In 2009 the song was sung by Rachel Adedeji on The X Factor (UK).