News Metallica postpones overseas tour as James Hetfield re-enters rehab for ‘addiction’ September 27, 2019September 28, 2019 Cydney Henderson, USA TODAY Comments Off on Metallica postpones overseas tour as James Hetfield re-enters rehab for ‘addiction’ Metallica is postponing their upcoming tour to Australia and New Zealand so lead singer James Hetfield can re-enter a treatment program for addiction.