Los Angeles, Jan 26 : Actor Austin Butler said it took him a while not to use his Elvis voice when talking and hence he ended up hiring a dialect coach. On Wednesday's The Late Show, Austin talked to host Stephen Colbert about the difficulty of shaking the accent when it came time to film his next project, the World War II miniseries 'Masters of the Air'. 'It was a lot,' Austin, who featured in Baz Luhrmann's Elvis biopic, said, reports deadline.com. 'I was just trying to remember who I was. I was trying to remember what I liked to do. All I thought about was Elvis for three years.' He added: 'I had a dialect coach just to help me not sound like Elvis in that film.' Austin immersed himself in Elvis's voice archives. 'I'd hear him say a certain word and I would clip just that bit out so I knew how he said that word,' Austin said. 'I created my own archive of how he said every word and every diphthong, and the way that he used musicality in his voice.' Austin's Elvis performance won him a Golden Globe and earned him an Oscar nomination. /IANS