Watch Lady Gaga and Metallica's Grammy performance with James Hetfield's vocals

Technical difficulties during Metallica and Lady Gaga's Grammy performance are soon to be forgotten. On Sunday night (Feb. 12), viewers noticed the audio of the artists' "Moth Into Flame" duet lacked a key piece: Metallica frontman James Hetfield's vocals. However, a clip posted on a Romanian Facebook fanpage features footage from a web feed of the broadcast that somehow did pick up Hetfiled's mic.  

Although this version now features both voices, you can still see that Hetfield could not hear his vocals from on stage. At least we now know that somehow, somewhere, Hetfield's voice was heard. Check it out the below.