NOW #1SAll 18 songs contained on Now #1s reached the top of the Billboard Hot 100. Most of the songs did so at some point between late 2012 and early 2015, though the inclusions date back as far as 2005 (Mariah Carey's "Don't Forget About Us"). This is far from complete. It's a mere sampling of the chart toppers from the period covered, but it's handy for casual fans of late 2000s early 2010s pop. Among the major singles here are Bruno Mars' "Locked Out of