In a career spanning nearly 50 years, Katherine Joan Greer, known professionally as Jo Ann Greer, worked in the fields of movie dubbing and band-singing. She sang with several big bands including those of Les Brown and Ray Anthony. Her singing voice was dubbed in for stars in several Hollywood films. She made television appearances in Bob Hope's TV shows, Al Pearce's 'Stars of Jazz' and Al Jarvis's Juke Box Jury. In 1991, she joined forces with two other former 'ghost' singers - Annette Warren and India Adams, and created a popular cabaret show called Voices-Hollywood's Secret Singing Stars.