Norwegian black metal icons Mayhem have officially kicked off the mixing process of their new album, a follow-up to 2007's "Ordo Ad Chao." As Blabbermouth reports, the effort is tentatively scheduled for an early 2014 release. Asked in 2012 on whether the band's working on new material, bassist Jorn "Necrobutcher" Stubberud told Total Rock Radio: "I think that we are not a traditional band in that matter, that we make an album every year and then do a tour with that. 'Cause we don't feel it's necessary to do that - we do an album when we feel like doing an album." He continued, "It's true - all the guys have some other projects also; like Hellhammer [drums] has Arcturus, Attila [Csihar, vocals] has Void Ov Voices and Sunn O))). It takes time to come up with some good stuff, and we don't wanna rush anything." As the band's fourth studio effort, "Ordo Ad Chao" peaked at No. 12 on the Norwegian album chart, earning Mayhem their highest chart spot ever. The record was also honored in the "Metal" category at the 36th annual Spellemann awards ceremony, the Norwegian equivalent of the renowned Grammy Awards.