The songs on "Superunknown" captured the creativity and heaviness of the band's earlier works, while showcasing the group's newly evolving style. Lyrically, the album was quite dark and mysterious, and it is often interpreted to be dealing with substance abuse, suicide, and depression. At the time, Sylvia Plath inspired Cornell's writing. The album was also more experimental than previous releases, with some songs incorporating Middle-Eastern or Indian music. J. D. Considine of "Rolling Stone" said "Superunknown" "demonstrates far greater range than many bands manage in an entire career". He also stated, "At its best, "Superunknown" offers a more harrowing depiction of alienation and despair than anything on final studio album "In Utero"." The music video for "Black Hole Sun" became a hit on MTV, and received the award for Best Metal/Hard Rock Video at the 1994 MTV Video Music Awards, and in 1995 the Clio Award for Alternative Music Video. Soundgarden won two Grammy Awards in 1995—"Black Hole Sun" received the award for Best Hard Rock Performance and "Spoonman" received the award for Best Metal Performance. The album was nominated for a Grammy Award for Best Rock Album in 1995. "Superunknown" has been certified five times Platinum in the United States and remains Soundgarden's most successful album.