The Killer's song "When You Were Young" begins with an open guitar chord and four bars of driving rock ‘n' roll before the famous two-part hook (theme) enters. The two-part hook is made up of a short catchy guitar, or keyboard lick that is answered immediately with an almost identical lick making up the "two-part hook." How many times is this two-part hook played in "When You Were Young" (slight variations of the "hook" should be counted)?