In 1932 the precocious singer and celebrity impersonator made her radio bow at age six, hosting
Baby Sybil Elaine and Her Kiddie Revue She made her screen debut in one of
Roscoe Arbuckle's
Vitaphone shorts produced in New York. In 1934 she enrolled in New York's School of Song, Dance, and Stagecraft, which instructor Mabel Horsey had established the previous year. Horsey staged a revue showcasing her students, and
Billboard columnist Eugene Burr attended the show: "The high spot of the program was a replica of one of the broadcasts of
The Stars of Tomorrow, which Miss Horsey presents Saturday mornings at 11:30 over station
WEVD. Outstanding in this section -- and in the show, for that matter -- was the work of Sybil Elaine Krinney, a tiny lass who has an amazing stage presence and who sings, dances, and handles herself with the ease and ability of a veteran." She was also featured in the New York-produced musical short
Vaudeville on Parade (Universal, 1934), followed by appearances in two Hollywood features, ''
Keep 'Em Rolling (1934) and The People's Enemy'' (1935), both for
RKO Radio Pictures. In 1935 she rode an elephant in the Broadway musical
Jumbo (1935) at the
Hippodrome Theatre. Also in 1935, she joined the cast of the children's program ''
Let's Pretend, produced by Nila Mack. In 1938 Mack cast Sybil in a spinoff show, the juvenile quiz program The March of Games''. Vitaphone shorts producer
Sam Sax, assisted by
vaudeville impresario
Gus Edwards, assembled a troupe of juvenile performers to appear in the musical short subject
Trouble in Toyland (1935). Sybil Elaine Krinney, as she was billed, sang "I Can Sew a Button (Just Think What I Could Do for You)" and did impersonations of
Greta Garbo,
Mae West,
Joe Penner, and other popular personalities.
Film Daily singled out her specialty act, praising her as "a surefire star of the future, this kid." ==Radio==