I think everybody agrees that Whitney Houston is one of the greatest female singers. Her voice was amazing and she had great success as a singer from the middle of the 80's to the 90's. You can listen to her amazing voice in her cover song "I Will Always Love You".
However, she had a difficult time from 2000 to 2008. She got hooked on drugs and was violently attacked by her husband. She must have realized that she shouldn't keep going on in such a situation. She divorced her husband and attend