Dave Mustaine has divulged the details of his last conversation with James Hetfield — and why it didn't go well. READ MORE: Metallica Songs Co-Written by Dave Mustaine RankedWhy Did Dave Mustaine Object to the 'No Life 'Til Leather' Reissue? So do the math: If I wrote the music and James wrote the lyrics, then the credit is 50 percent me and 50 percent James. Dave Mustaine Says James Hetfield 'Took Offense' to His ObjectionsThis disagreement prompted Hetfield to reach out to Mustaine. READ MORE: 50 Best Metal + Hard Rock Debut Albums (Ranked)Was That Really the Last Time Dave Mustaine Talked to James Hetfield?