System of a Down working on new album

System of a Down drummer John Dolmayan confirmed that the band is working on a new album in an interview with the United Kingdom’s Kerrang! magazine.

“We’ve been working on a new album for the last six months and there [are] about 15 songs that I think are album-worthy,” Dolmayan said in the interview, which appeared in the magazine’s November 9 issue, the Armenian Weekly reports.

Though Dolmayan confirmed that the band is working on the album, he said that they are still unsure about when the album will be released. “System of a Down is definitely making an album, we just don’t know what terms it will be made on,” Dolmayan said, adding, “there’s a tremendous amount of pressure on us, though, because it’s been 11 years—at least 12 by the time it [the album] comes out. Our playing ability is better than it has ever been and we’re trying new things.”