Most covered songs of all time

(STACKER) - If you agree with the old proverb that imitation is the sincerest form of flattery, then cover songs serve as tributes to their original artists. Sometimes, a cover version vastly outshined its original. Such is the case with "Summertime," a song originally written for the 1935 George Gershwin opera "Porgy and Bess," which Ella Fitzgerald and Louis Armstrong put a jazz spin on in 1957 to make it an international hit.To learn more about the most covered songs in musical history,