The March concerts by the Quad City Symphony Orchestra feature just one work, and the imposingly somber title alone might give their potential audience pause: War Requiem. It is a difficult and complex work, and a mammoth undertaking for the symphony and its performance partners. But understanding composer Benjamin Britten's goals and methods can illuminate the experience of his anti-war masterwork and help attendees make the most of this once-in-a-lifetime opportunity.

Less than a minute into In Tall Buildings' 2010 self-titled debut is a moment that hints at Erik Hall's cut-and-paste method. New vocal lines burst abruptly from beneath the previous ones, as if overeagerly jumping their cue. But the music is so carefully constructed that it's obvious this was a choice rather than a mistake, and the effect in an otherwise patient and gentle song is the understanding of a clear vision behind the music.

The album was crafted over four years, Hall said in a phone interview this week promoting his February 15 performance at Rozz-Tox. "I didn't push it at all," he said. "I didn't work on it unless something came to me, unless I had an idea that I knew I wanted to apply to the music that I was already working on. So it was very gradual."

While the album's gestation period was long by music-industry standards, Hall's composing and recording approaches were particularly unusual. He started out with a backbone - a chord progression or rhythmic pattern - and recorded it for the final product. "That's it," he said. "It's not like a demo. ... Sometimes I have to sit and live with that for a good while before I figure out where the vocals are going to come from, what the song is going to be about, and what else sonically it needs." He added with a laugh: "That can take anywhere from a week to a year."

When the quartet Deleted Scenes recorded its second album, Young People's Church of the Air, the atmosphere was "intense and pressurized," resulting in a "doomed energy," singer/guitarist/co-songwriter Dan Scheuerman has said.

In an interview this week promoting his band's February 3 performance at Rozz-Tox, Scheuerman elaborated on those intriguing phrases. To start, the recording period was more compressed than for the band's debut, he said: "We wanted the record to have a moment. Instead of being recorded over a year, it was recorded over more like three months. In that sense, it's more identifiable as one piece of work."

But the time frame was just one factor. "There was a weird vibe going on in the studio," Scheuerman said. Producer L. Skell "is hard to read. So there was a lot of silence and glowering ... . And so we'd go in a direction and not be sure what was going on. And then when things seemed dark and we weren't getting anywhere, everything would sort of snap together and ... [Skell] would come up with one or two really amazing suggestions to focus everything. There was a sense of ominousness to the proceedings, and that I think created a sense of doom. And there's also a bit of doom in the songwriting as well. ... There was a high degree of tension."

Metal often skates by on aggression and technical chops, and it rarely creates drama. The Quad Cities quartet Helmsplitter, on its debut Storms of Genocide - for which the band will perform a CD-release show Friday at RIBCO - nails the requisite fury and dark majesty while also capturing that elusive elevating quality.