The official Instagram account of U2 has posted some rare photos of Bono with Hal Wilner, who passed away yesterday and saddened the whole music world with his tragic death.

Maybe you might know that Hal Wilner is a worldwide producer and metal community has known him because of the producing job that he did on the Lulu album of Metallica.

In the Instagram post, Bono described his feelings about the death of Hal and broke his social media and press release silence after the waiting of about three weeks.

Here’s what he said over Hall’s death:

“A lot of people love music but very few people are loved by music as much as Hal Willner.”

U2 page added:

“The band have been paying tribute to a longtime friend and collaborator, the music producer Hal Willner.”

U2 guitarist Edge left a simple message about him and said:

“One of the greatest music men of all time.”

See the original Instagram post below.