Welcome to WatchMojo, and today we’re counting down our picks for the worst singers and rappers of all time. For this list, we are strictly looking at vocal ability or lack thereof. Think about ...

While Ozzy Osbourne might be the most famous lead singer in the world, he is only one of five Black Sabbath singers. So, who is the best?

The competition for the Ravens' best singer was a essentially a two-man race. Identifying the worst singer, however, wasn't difficult at all for Ravens players. Hint: he plays safety. ESPN's Mel ...