Complex sentence: He rose to fame in 2003 when he was one of the candidates on M2 Play Search, organised in December 2003.Unfortunately,he was not in first 4,so he did not take part in the new group'4play'.
Split into simpler sentences: He rose to fame in 2003 when he was one of the candidates on M2 Play Search, organised in December 2003. Unfortunately, he was not in first four, so he did not take part in the new group'4play'.