A new lawsuit claims songwriters "stole a core portion" of smash Dan + Shay and Justin Bieber hit "10,000 Hours" from a tune written decades ago, according to documents filed this week in federal court. Music company Melomega filed a suit Thursday in Los Angeles that claimed "impudently bold" plagiarism on "10,000 Hours," a 2019 crossover hit from three-time Grammy-winning Nashville duo and perennial pop star. The suit claims writers borrowed from the chorus, verse and hook of the little-known R&B song "The First Time Baby Is A Holiday," according to court records obtained by the Tennessean.