The members of Big Thief don’t sleep. Or maybe they don’t eat. On the basis of the collective output of Adrienne Lenker, Buck Meek, and their cohorts, they’ve definitely eliminated some basic human function that cuts into time for creative endeavors. Two years after the release of the double album Dragon New Warm Mountain I Believe in You, which included twenty original tracks, Big Thief recently took the stage of Portland’s Project Pabst and delivered a set that included ten new songs.

That surprise introduction on a whole new chapter in the Big Thief’s songbook would be impressive enough in this era of long stretches between albums, but the individual members have also been notably prolific away from the band in recent years. Lenker, for example, released her sixth studio album as a solo artist earlier this year, and she’s still serving leftovers that are just as good as the material on the record. The newest song, “Once a Bunch,” might even be better than those that made the cut for the album. Her songwriting on “Once a Bunch” is positively Dylanesque: “Eyes magnetic, that moldavite flame/ Stopping the traffic, all six lanes/ Calling me baby, barely saying my name/ I was leaving before I’d arrived”) and her performance is warmly loose and engaging.

Who needs sleep anyway?