WASHINGTON This years 4th of July Freedom Fest at Guantanamo Bay featured a live music performance by a band whose music was used to interrogate detainees at the Naval base.

The heavy metal band Drowning Pool played a show for U.S. troops at Guantanamo Bay on Tuesday before the fireworks display, the Miami Heralds Carol Rosenberg first reported . Years ago, interrogators blasted the bands song Bodies as part of an effort to break down prisoners will and keep them awake during extended interrogation sessions.

In a 2006 story in Spin about using music as a tool of torture, David Peisner wrote that almost every interrogator and soldier he spoke to mentioned Bodies as their preferred song for psyching out enemies and captives.

Years later, the Senate Armed Services Committee confirmed in a report that military interrogators used Bodies during interrogations with Mohamedou Slahi, a Mauritanian detainee.

Slahi, who was transferred from a CIA black site to Guantanamo in 2002, was released last year after 14 years of detention. He was never charged with a crime. While in prison, he hand-wrote a diary, chronicling his experiences being subjected to interrogation techniques that have since been banned. A redacted version of Slahis diary was published in 2015. In it, Slahi wrote that he might never forget that song.