Also, Donald Lawrence shows three great examples of alto, soprano, and tenor. I saw him in an interview, and he said he picked Vanessa Bell Armstrong to sing the first verse of "It's Your Time" because she is his favorite alto, Karen Clark his his favorite soprano, and Darwin is one of his favorite tenos. So I think Karen and Vanessa are the perfect examples of a true soprano(Karen) and a true alto(Vanessa.) They can both cross over and easily sing each others part. That's the beauty of gospel, most singers have great range.