11, 2010, in Europe and the UK on Roadrunner Records, and on November 9, 2010, in North America on Alter Bridge Recordings via EMI. A loose concept album, AB III has received critical acclaim, with Rick Florino from Artistdirect calling it a "sprawling masterpiece". Its lead single, "Isolation", reached No. 1 on active rock radio and the Hot Mainstream Rock Tracks, the band's first single to do so. The band toured extensively in support of the record, with Black Stone Cherry and Like a Storm in the spring of 2011, in addition to co-headlining the second annual Carnival of Madness Tour with Theory of a Deadman. The tour continued into January 2012. Four more singles from AB III have since been released: "I Know It Hurts", "Ghost of Days Gone By", "Wonderful Life", and "Life Must Go On". The band also released a second concert film titled Live at Wembley on March 26, 2012. The band reunited in late 2012 and recorded from April to July 2013 their fourth album, Fortress, released on September 30, 2013. The band reconvened in January 2016 to record their fifth studio album The Last Hero, which was released on October 7, 2016.<ref>. In March through May 2019 the band reconvened to record their sixth studio album, 'Walk the Sky, which was released on October 18, 2019 .</ref> Tremonti During the time that Creed was at the end of its career in the early 2000s, Tremonti had intentions to form a speed metal side project called Downshifter (with Hatebreed vocalist Jamey Jasta and Slipknot drummer Joey Jordison), but the project never got off the ground. Later, in 2008, Tremonti and his brother formed FRET12, an online musicians' community, production company, and record label, to release his 2008 instructional guitar documentary DVD titled Mark Tremonti: The Sound & the Story, wherein he teaches all of his guitar solos from Alter Bridge's sophomore release, Blackbird. He also teaches warm-ups, alternate tunings, finger picking style, legato techniques, and other advanced exercises. His DVD, which is the first in The Sound & the Story series of instructional DVDs, also features guest appearances from Myles Kennedy, Michael Angelo Batio, Rusty Cooley, Bill Peck, and Troy Stetina. The aforementioned series also includes DVDs by Leslie West and Troy Stetina. Tremonti later began expressing interest in releasing a solo album in 2010. "The bands are so different", he said of his two