Kelly Clarkson took fans back to the early days of Whitney Houston with her Kellyoke cover of "How Will I Know" on Wednesday (July 8).Accompanied by her socially-distanced house band -- including one very '80s keytar -- the talk show host's vocals nearly measured up to Houston's on the original recording of the pioneering dance-pop track."How will I know if he really loves me?/ I say a prayer with every heart beat/ I fall in love whenever we meet/ This love is strong, why do I feel weak?/ If he