The group's fourth album, Party Music, was released on 75 Ark Records in 2001. It was re-released in 2005 by Epitaph Records. The original cover art depicted group members standing in front of the Twin Towers of the World Trade Center as they explode. Riley is depicted pushing a button on a bass guitar tuner and DJ Pam the Funkstress is shown holding conductor's wands. The photo was taken in May 2001. The album was scheduled to be released just after the September 11, 2001 attacks. In response to the uncanny similarity of the artwork with the attacks, the album release was delayed until an alternative cover could be prepared. The album hit #8 in the 2001 Village Voice Pazz and Jop Poll- the most important year-end critic's list, was named “Pop Album Of The Year” by the Washington Post, and "Hip-Hop Album Of The Year" by Rolling Stone. The album included a guest appearance by dead prez on the song "Get Up". Boots Riley released a controversial press release one week after the 9/11 events, which was later published in the book, Another World Is Possible. The press release stated that "last week's events were symptomatic of a larger backlash against U.S. corporate imperialism." The controversy surrounding the cover art, press release, and the lyrics from Party Music (specifically the song "5 Million Ways To Kill A CEO") led to Boots appearing on local network news affiliates all over the U.S. He also appeared on Fox News's Hannity and Colmes and ABC's Politically Incorrect with Bill Maher. During this time, syndicated columnist Michelle Malkin called Boots's lyrics “a stomach-turning Example of anti-Americanism disguised as highbrow intellectual expression.”