Sam Cooke the great link ?

So I was checking out the faithfully tutorial and Ken mentioned how much of an influence Sam Cooke was on Steve Perry. So I looked him up and checked out a few of his songs and WOW!! This guys licks, ennounciation and melodies are littered throughout a lot of the great singers from Soul, Rnb and even hard rock and metal. Probably about 90 percent of the stuff that really appeals to me as a student of singing.
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One of his big hits
But dont forget about "Sam and Dave"
Sam Moore (of sam and dave) is still singing