Country blues singer Lottie Kimbrough, billed as The Kansas City Butterball (she was a rather large woman), sang in speakeasies and nightclubs. Kimbrough recorded her music from 1924 through 1929 and is now best known for her collaborations with Winston Holmes. Holmes supplied a series of yodels, vocalized bird calls and train whistles on some of their recordings. A good recording of Kimbrough and Holmes singing Wayward Girl Blues (1924) is available on YouTube [https://www.youtube.com/watch?v=b7SBgZ7rYTY]. The similarity to the Jimmie Rodgers Blue Yodels is evident in this Kimbrough recording.