Complex sentence: The brothers began their career in 1996, with a group named "The Fenders" and was composed by the three brothers and the pop singers Wanessa Camargo and Camila, who left the group.
Split into simpler sentences: The brothers began their career in 1996, with a group named "The Fenders". Is consisted of the three brothers, as well as the pop singers Wanessa Camargo and Camila, who left the group.