Chart Beat

P!nk notches her fourth No. 1 on the on the Billboard Hot 100, as "Just Give Me a Reason," featuring fun.'s Nate Ruess, rises 3-1. Justin Timberlake and Demi Lovato, meanwhile, return to the top 10 with "Mirrors," and "Heart Attack," respectively, and PSY gallops onto the chart at No. 12 with "Gentleman," which has already set YouTube views records following its release last week.

After touring with some of the genre's core acts, the Nashville-based folk singer/songwriter readies her new self-titled album.

The highly controversial campaign to get "Ding! Dong! The Witch Is Dead," by the "Wizard of Oz" Film Cast to No. 1 on the U.K. singles chart has ended in narrow defeat.

Not much can surprise regular observers of the bizarre and eccentric world of the U.K. singles market, but even seasoned chart-watchers are bemused at the breakout of what is now a full-on national debate about Margaret Thatcher sparked by "The Wizard of Oz."

With the debut of 'High School,' Minaj notches her 44th Hot 100 hit, equaling the output of fellow 'American Idol' judge – and rival? – Carey

While Justin Timberlake's "The 20/20 Experience" holds down the No. 1 spot on Top R&B/Hip-Hop Albums for a third week, Tyler, the Creator debuts "Wolf" at No. 2.