In 1988, the National Academy of Recording Arts and Sciences added a Hard Rock/Metal Performance category for the 31st Grammy Awards. Nominated works for the award included "Blow Up Your Video" by &lt;a href="AC/DC"&gt;AC/DC&lt;/a&gt;, "Cold Metal" by Iggy Pop (from the album "Instinct"), "Nothing's Shocking" by Jane's Addiction, "Crest of a Knave" by Jethro Tull, and "...And Justice for All" by Metallica. Jethro Tull's lead singer Ian Anderson was surprised by the band's nomination, as both Anderson and music critics did not consider the group's music to be part of the heavy metal music genre.