Following by five years that included an addition to the family and a health ordeal, indie folk duo return, healthy and in form, with a number of unexpected high-profile guests on the charming and heartfelt . The title is a reference to the mythological creatures that lured sailors to their deaths with song, and also to ambulance sirens. Much of the album was recorded in their home studio during 's treatment for breast cancer, which left her -- and by extension her husband and bandmate, -- unable to travel. Several guest musicians stepped in via remote to contribute performances to the record, including guitarist ( ), bassist ), drummers ) and ), and keyboardists ). At 16 tracks, may sound like an opus, but with only one song longer than four minutes, a mix of tempos, a balance of whimsical and more serious songs, sequencing that propels the album forward, and the sheer quality of the tunes, it's anything but a burdensome listen. On the buoyant side, the -led "Never Let You Down" offers poppy sweetness and singsong bass, and the acoustic "My Little Love" is a take on a harmonized lullaby. On the more delicate end of the spectrum, the title track is a moving ballad that references both meanings of "sirens," with a particularly engaging vocal delivery, even more so upon learning that 's voice was recorded in one take on a day her condition would not allow more attempts. She doesn't sound ill (anywhere on the record, for that matter) but there's a poignancy to the performance that's conspicuous and affecting. The piqued tone of the driving "No Trouble" ("Don't need no trouble/But it's plain to see/Sometimes trouble needs me"), the atypical chord progressions of "Wild Boy," and the -style melodic rap of the grooving "Fancy Things" are among other ear-arousing moments on a well-crafted set. Beyond the 14 original songs, also includes two covers that were 11th-hour additions to the album in and 's "Learning to Fly" and 's "Volunteer." The latter is a touching saga of loss sung vulnerably by with on guitar and , ) on bass; the former a capable rival to the original '90s hit, with a support band of on piano, and on drums. ~ Marcy Donelson