- Metallica's Lars Ulrich breaks down summer tour: 'You have to bring some s--- that blows up'
- Metallica's Lars Ulrich calls Lady Gaga Grammys duet a 'clusterf---'
- Metallica belts Rihanna's 'Diamonds' in star-studded Carpool Karaoke trailer
- Lady Gaga and Metallica performance besieged by tech problems at Grammys
- Lady Gaga got a tattoo to prepare for her Grammys performance with Metallica