5 Weeks: Meghan Trainor - 'All About That Bass'
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The Longest Reigning No.1 Singles In Big Top 40 History #OWNED
8. 5 Weeks: Meghan Trainor - 'All About That Bass'
Talk about a breakthrough single! Nobody had really heard of Meghan Trainor when her debut single 'All About The Bass' stormed the top 40 and stayed at the top for a gigantic five weeks. She was finally knocked off her perch by Cheryl's 'I Don't Care'.