Evan Agostini/Invision/AP Culture December 31, 2019 Mariah Carey is first artist ever to score No. 1s in 4 decades
Rich Fury/Getty Images for iHeartMedia Culture December 27, 2019 Katy Perry wants her fans to hold her 'accountable' for her New Year's resolutions
Broadimage/REX via Shutterstock, FILE Culture December 24, 2019 Justin Bieber dropping new single, 'Yummy'; 2020 tour kicks off May 14
Kevin Mazur/Getty Images/FILE Culture December 23, 2019 Ariana Grande drops live album, 'k bye for now (swt live),' after wrapping Sweetener world tour
Robert Kamau/GC Images via Getty Images Culture December 20, 2019 Joe Alwyn finds it 'flattering' that Taylor Swift writes songs about him
Evan Agostini/Invision/AP, FILE Culture December 19, 2019 Camila Cabello apologizes for using 'horrible and hurtful' language
Getty Images for MC Culture December 18, 2019 Mariah Carey to release new video for 'All I Want for Christmas Is You' at midnight Friday
Emma Mcintyre/Getty Images, FILE Culture December 17, 2019 Post Malone, BTS, Alanis Morissette to perform in Times Square for 'New Year's Rockin' Eve'
Luis Fonsi/Youtube Culture December 13, 2019 YouTube reveals its most-viewed music video of the decade
Getty Images for dcp, FILE Culture December 13, 2019 Taylor Swift turns 30: A look back at her stunning career