As well as the example above, when he sings some words beginning with an "h" he'll drop the "h" sound Cockney style, eg "I 'ope you had the time of your life" and "Pay attention to the cracked streets and the broken 'omes". Some of his vowels sound kind of English as well, not all the time but just sometimes, like I guess in the words hope and home there. It gives him a very slight hint of an English accent on occasion, he still always sounds American overall though.