American singer Jennifer Kate Hudson is well known for her breathtaking voice. Her song “And I Am Telling You” is known to be quite challenging to perform live. As a singer, you need to be able to sustain a high and low pitch voice throughout the song. Watch as 15-years-old Sarah Ikumu walks on stage on Britain’s Got Talent. Simon Cowell initially laughed at her song choice, but when she began singing, she left everyone shocked. Sarah went on to receiving the golden buzzer, which puts her through to the live finals.