There is more than one artist with this name:
1) Ella Rodriguez whose debut album is Die of Love is a singer song writer from southern California with a Latin background. Her music and style was heavily influenced by the reggae and rock scene of the 1960's through 1990s.
2) ELLA: Bristol based band formed in 2003 maintaining to this day despite numerous line up changes through continued touring releasing a demo and EP along the way. Currently working on their debut album of which 2 demo tracks have been released.
3) Norzila binti Haji Aminuddin or Ella (born July 31, 1966) is a popular Malaysian rock musician. Ratu Rock is Malay for "Queen of Rock" and this is an apt title for this compilation of Malaysian female rockstar Ella's more well-known hit songs spanning the 1990s to today. Ella still holds at the time of writing the local record for the bestselling female artist for pushing more than 300,000 copies of her records during the peak of her career. She also become an international icon and one of the 'Richest Artist' in Malaysia.