Bruno Mars' mother died last night of a brain aneurysm. Bernadette Hernandez was hospitalized earlier on Saturday in Honolulu, with what was believed to have been a heart attack. She was just 55 years old. Hernandez played a very key role in Mars' development into the star singer that he has become. A hula dancer and singer who immigrated from the Philippines, she cultivated her sons' interest in music at an early age. Mars had even recorded a song in her honor, titled "I Love You Mom."