Shirley has toured internationally and appeared in the media with Grand Wazoo, as well as in her own right. Her unique vocal input and attractive stage presence, brought her to the attention of producers and media, and she released a popular dance remix album, Deep Face, and was featured in an ABC-TV documentary about her life, during 2005. Shirley also appears in a funk outfit called Soulglo.

After a decade performing in Grand Wazoo, Shirley is the band's lead female vocalist and a favorite with her colleagues and audience.