not cha cha but chi chi ローズ・マーフィさんです。
"busy line" http://
Rose Murphy (1913-1989) was known as "the Chee-Chee Girl". She built a big reputation on the New York club circuit and also became very popular in the UK and Europe. Everyone knows Marilyn Monroe's rendition of "I Wanna Be Loved By You" and most jazz listeners are familiar with Ella Fitzgerald's variations on "I Can't Give You Anything But Love". But few people are aware that the former is an unabashed copy of Rose's version, and that the latter is a mischievous yet affectionate imitation. With her bubbly, infectious personality and lively keyboard style she was something of a female Fats Waller: pure joie de vivre. She devised her own unconventional means of accompagnying herself by tapping her right foot on a board which she carried with her from one city to the next. But it is that delicious, lightly abrasive, high-pitched, chirrupy, little-girl voice, the bright bubbles floating from her lips, the amusing "bruuup bruup" and "cheee cheee" conveyed with elegant yet explosive latent feminity which led to Rose's successful career in very posh nightclubs. In the 1960's she performed regularly at the Cookery in Greenwich Village.