In my opinion, one of the best voices alive, Miss Abida Parveen is a living legend among fans of heart stirring music. Originally from the Sindh province of Pakistan, Abida Parveen is trained in Sufiana Kalaam.
According to Wikipedia:
She sings mainly ghazals and her forte, Kafis, a solo genre accompanied by percussion and harmonium, using a repertoire of songs by Sufi poets. Parveen sings in Urdu, Sindhi, Saraiki, Punjabi and Persian, and together with Nusrat Fateh Ali Khan is considered one of the finest Sufi vocalists of the modern era.  She is currently a Judge on a musical show Sur Kshetra.