In 2009, which institution inducted Metallica?

In 2009, Metallica was inducted into the Rock and Roll Hall of Fame. The ceremony took place on April 4, 2009, recognizing the band after its first nomination and in its second year of eligibility.

The induction honored Metallica’s core history, including James Hetfield, Lars Ulrich, Kirk Hammett, Robert Trujillo, former bassist Jason Newsted, and the late Cliff Burton. Flea of the Red Hot Chili Peppers inducted the band, while Burton’s father, Ray Burton, accepted the honor on his son’s behalf.

A common mix-up is confusing the Rock and Roll Hall of Fame with a Grammy-related honor. Metallica has won Grammy Awards, but the 2009 institution named in this question was the Rock and Roll Hall of Fame. Another memorable detail is that both Newsted and Trujillo appeared during the performance, despite earlier discussion about who would play.