Pop star Mariah Carey’s knowledge is put to the test of her extensive music collection. Keep watching to see how many lyrics she can finish! ►► Subscribe for more music news: http://blbrd.cm/Proracf ►► See our latest videos: http://blbrd.cm/xOgw6VQ About: Billboard is the world's most influential music media brand, with an unmatched authority among artists, fans and the industry. Billboard powers the ultimate global music destination and magazine, featuring unrivaled reporting on music news,

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