“The world mourns a genius today, and we grieve for the loss of our cousin, our friend, and our partner in a great musical adventure,” the band wrote on their official Instagram account Wednesday.

Brian Wilson—who died on June 11th, aged 82—was one of three brothers in the group and wrote most of their songs.

“Pet Sounds” is beautiful — with gorgeous vocal harmonies, haunting timbres and wistful lyrics of adolescent longing and estrangement.