Surrounded by a lifetime's worth of globe-trotting photographs, glimmering awards and glamorous gowns, including an elegant Japanese kimono, Leona Mitchell couldn't help but feel a little overwhelmed.

Jubilant Sykes, a renowned opera and gospel singer who was also a Grammy nominee, was stabbed to death inside his Los Angeles-area home on Monday. He was 71 years old. His 31-year-old son, Micah Sykes ...