Brain Salad Surgery

Brain Salad Surgery is the fourth studio album by English progressive rock band Emerson, Lake & Palmer, released on 7 December 1973 by their new record label, Manticore Records, and distributed by Atlantic Records.

Following the tour in support of their previous album, Trilogy (1972), the group acquired rehearsal facilities to work on new material, which would blend classical and rock themes. To control things, they launched their own record company, Manticore, in March 1973. The album was recorded from June to September at Olympic and Advision Studios and mixed in October 1973 at AIR Studios in London. As were all the group's previous works, it was produced by Greg Lake. The album includes a cover designed by H. R. Giger.

Released to a mixed critical response, it has received more favourable reviews since its release. Brain Salad Surgery continued the group's commercial success, reaching number 2 in the United Kingdom and number 11 in the United States, and eventually gaining Gold certifications in both countries. In its support, the trio embarked on their largest world tour to date, including a headlining spot at the California Jam festival.

The album has been remastered/remixed and reissued numerous times, including stereo and 5.1 surround sound remixes by Jakko Jakszyk.