On January 11, 2010, Odadjian posted on his official Twitter account, "Are you guys ready for System?" This statement was picked up by the media and fans as a potential reunion announcement. This performance was followed by another partial reunion of the band on November 20, 2009, at the Avalon in Hollywood during which Malakian, Dolmayan, and Odadjian played at a show benefiting bassist Chi Cheng and played hits "Aerials" and "Toxicity." They were joined by Deftones vocalist Chino Moreno for these songs.
Franky Perez from Scars on Broadway joined them for these songs. On October 31, 2009, Odadjian threw a Halloween party at the Roxy during which he, Malakian, and Dolmayan performed "Suite-Pee" (off System of a Down), Scars on Broadway's "They Say," and an unknown song. I find them all to be very entertaining." In an interview with Tankian about Big Day Out 2009 (a show which involved playing his Elect the Dead album live with the Auckland Philharmonia Orchestra, and a few songs from his then-upcoming second studio album) Tankian stated, "Every few months I am honored to hear interesting rumors about whether the band is going to tour or break up permanently. When told that many people were wondering what the future of the band was, Malakian responded by stating that "We'll all know when the time is right." Dolmayan added, "It'll just happen." In an April 2008 interview with Kerrang! magazine, Malakian and Dolmayan gave their takes on the band's future. Shavo Odadjian told Launch Radio Networks in 2007 that System of a Down was "alive and well," but just were not working together. Odadjian pursued his project with RZA of Wu-Tang Clan, a hip-hop group named AcHoZeN, worked on his urSESSION website/record label, and performed as a member of funk legend George Clinton's backing band. Dolmayan, alongside working with Scars on Broadway, formed his own band, as well as opened Torpedo Comics, an online comic book store. Malakian and Dolmayan released Scars On Broadway's debut self-titled album on July 29, 2008. Tankian released his debut solo album Elect the Dead in the autumn of 2007 to great critical and commercial acclaim. "Tonight will be the last show we play for a long time together," Malakian told the crowd during Sunday's last performance. System of a Down's final performance before their hiatus took place on Augin West Palm Beach, Florida. Malakian announced he was forming a band called Scars on Broadway, which was joined by Dolmayan. It was published in the US in 2007 through The Disinformation Company. May 2006 also saw the UK publication of a biography of the band entitled System Of A Down: Right Here In Hollywood by writer Ben Myers.