Metallica and Billy Eichner play "Metal Have I Ever?" in preview clips from Apple Music series
Knoxville, Tennessee native's smoky soul performances gave Keys her first-ever coaching win
Coaches pair with Jesse Larson, Chris Blue for guitar-driven "Let's Go Crazy," soulful "Diamonds and Pearls"
Singer joined by Chris Blue, Stephanie Rice and Vanessa Ferguson on Carole King-penned classic "(You Make Me Feel Like) A Natural Woman"
Singer and Canada's Indigenous Peoples are recipients of this year's Conscience Award
T.I., YG and Treach also performed on behalf of hip-hop superstar
Pharrell, Alicia Keys, Dhani Harrison also added to lineup
'Voice' coach also channeled Janis Joplin during 'Tonight Show' game
'Voice' coaches recorded stripped-down version of TLC's 1994 ballad
Politician also includes Tom Waits, Alicia Keys, Bruce Springsteen, Billy Joel, Rolling Stones on mix honoring Spotify’s move to 4 World Trade Center
Alicia Keys, Amy Poehler, Sting throw support behind organization fighting anti-LGBTQ legislation
John Legend, Alicia Keys, Will Smith, Shaquille O'Neal buckle up in first clip for Apple Music's upcoming series
R&B singer, rising country star trade verses on emotional cut from Morris' 'Hero' album
Best New Artist nominee and 2002 New Artist winner will perform together at the February 12th ceremonies
Singer also unveils accompanying video in celebration of her birthday