The online magazine Cove published a list of the world's top vocalists. It's based on the artist's vocal abilities, vocal ranges and harmony. The list is put together with the combination of the artist's acapella and live performances. Christina Aguilera tops the list with a perfect 50 (being the maximum) score. Maria Carey and Micheal Jackson round off the top 3. Other entries include Beyoncé at #7, Kelly Klarkson at #21 and Britney Spears at #72. thanks ubritney.com.