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."