On what date did Metallica record four early demos for its 1991 album?

Metallica recorded four early demos for its 1991 album on August 13, 1990.

The demo session included “Enter Sandman,” “The Unforgiven,” “Nothing Else Matters,” and “Wherever I May Roam.” These recordings captured important early versions of songs that would later define the album’s sound and public identity.

The date came before the main album sessions, which began in October 1990 at One on One Recording Studios in Los Angeles. A separate demo of “Sad but True” was recorded on October 4, 1990, adding another early milestone to the album’s development.

The four-demo session is sometimes mixed up with the album’s recording dates or with the later release dates of its singles. “Enter Sandman” became the lead single in July 1991, but its demo had already been recorded nearly a year earlier.