Sinead O'Connor, Irish singer, and musician was just 56 years old. "Nothing Compares 2 U" shot her to worldwide fame in 1990. It was written by Prince.
In 1992, on Saturday Night Live, she tore up a picture of the Pope after singing the song "War" by Bob Marley.
In recent years, she converted to Islam .
18 months ago, her 17 year old son, Shane, took his own life.