In 2001, he began his first full solo tour with The Plea for Peace Tour, consisting mostly of acoustic versions of Alkaline Trio songs with backing drums and bass in a few shows. His first solo release came in 2002 in the form of a split with Kevin Seconds of 7 Seconds fame. The songs were mostly acoustic with drums, bass, and piano played by Skiba. Alkaline Trio still occasionally performs the song "Good Fucking Bye". In 2005, Skiba contributed the song "Demons Away" to the Fat Wreck Chords' compilation Protect: A Benefit for the National Association to Protect Children. In 2006, Skiba launched the band Heavens with F-Minus bassist Josiah Steinbrick. The group released Patent Pending on September 12, 2006. Also in 2006, Skiba contributed to the track "Rock 'n' Roll High School" featured on Brats on the Beat: Ramones for Kids, a tribute album released on Go-Kart Records. In May 2007, Skiba performed five shows with Chuck Ragan of Hot Water Music. In late December 2008, Steinbrick announced on Heavens' MySpace page, "This is no longer a Heavens page. Sorry, that's just the way it's going down. Matt will still be doing Trio stuff and last I heard he might be working on a wonderful solo record. I'm not really positive actually but I'm sure it will be great." A falling-out between Skiba and Steinbrick led to the breakup. On August 18, 2009, at Debonair Social Club in Chicago, Skiba, Grant and Greg Corner and Jonny Radtke of Kill Hannah debuted the supergroup cover band Them Crooked Vulvas (and occasionally played under the name A Perfect Circus). On August 10, 2010, he released a solo album titled Demos on Asian Man Records. The album is said to be a precursor to a future Alkaline Trio album . In January 2012, Skiba released an EP along with former Angels and Airwaves and The Offspring drummer Atom Willard under the moniker The Hell. The Hell's debut EP is entitled Sauve Les Requins. Skiba's second full-length solo album, Babylon, was released on May 8, 2012. The album features Skiba leading a band called Matt Skiba and the Sekrets; the backing band includes AFI bassist Hunter Burgan, and former touring drummer for My Chemical Romance Jarrod Alexander. "Voices" impacted radio on May 1, 2012. In early 2013, Matt Skiba encouraged Mike Park of Asian Man Records to release The Smith Street Band's