'American Idol' All-Star Duets

The Top 20 was decided last week and now the remaining contestants have the opportunity to sing alongside musicians already making their mark in the industry.

BTS Teases New Song With Halsey

Mega-hit K-Pop group BTS released a teaser Sunday of upcoming new song "Boy With Luv." The just-over-45-second clip featured a familiar face from American pop royalty, "Without Me" singer Halsey.