The use of vibrato is common among talented vocalists but some singers overuse it. One such example came from Marsha Ambrosius who somehow managed to turn the US national anthem, ‘The Star Spangled Banner’, into a strange sheep call at the Mayweather vs Cotto boxing match.
With her trembling vocals and random runs, Ambrosius created a very unique yet confusing version of the anthem. If you don’t believe me then watch her at the Mayweather vs Cotto fight below and see if you could imagine a herd of sheep assembling outside the venue to meet their shepherd: