The chart-topping singer quit her smoking habit in 2011 in a bid to improve her health - but she fears she has damaged her voice in the process.
Lo mculi oqoqa ishadi uyeke umkhuba wakhe wokubhema ngo-2011 ngenhloso yokuthuthukisa impilo yakhe - kodwa unovalo lokuthi uzolimaza izwi lakhe kulokhu.