Every Night at Eight (1935)

Three young girls working in an agency have build a singing trio. They want to 'lease' the dictaphone of their boss to make a record of their singing, but they are caught and fired. When they are not able to pay their rent any longer, they decide to try it on an amateur contest at a radio station. Due to lack of food Susan Moore becomes unconscious and the contest is won by a big band. But this big band offers them a job with them at the radio station, they accept but after a while they again start to reach out for higher things and leave the big band.