Possible Clues:

• "The Jazz Singer" singer
• 'Swanee' singer
• The star of the first talking picture, 'The Jazz Singer'
• Star of the first talking picture
• Entertainer who popularized the phrase 'You ain't heard nothing yet'
• Swanee singer, d. 1950
• Russian-born American singer and film star, d. 1950
• Heavily made-up singer J. Lo also changed name
• Legendary American 'Mammy' singer
• The most original performer heard in cinema