Hypnotic string band Copal’s brand-new second album Into the Shadow Garden is for dancing in the dark. Alternately lush and stark, vibrant and mysterious, bouncy and sultry, their violin-fueled grooves mix elements of Middle Eastern, Celtic, Nordic and Mediterranean styles. Violinist Hannah Thiem leads the group alongside cellists Isabel Castellvi and Robin Ryczek, bassist Chris Brown, drummer Karl Grohmann and percussionist Engin Gunaydin (of the NY Gypsy All-Stars). Right off the bat, it starts hypnotically with a drone that gradually fades up – then the drums come in, then a plaintive, Middle Eastern-tinged violin melody and the first of Thiem’s many gripping, suspense-building solos that will recur throughout the album. About halfway through, it becomes clear that this is a one-chord jam. Eventually, a second violin voice is introduced; some terse harmonies follow over the slinky beat, then it fades down to just an oscillating drone, the dumbek drum and violin, and out gracefully from there. In a way, it reduces the essence of this band to its purest form. It’s music that sets a mood, gets your body moving and keeps it going – it’s awfully easy to get lost in this.

There are a couple of vocal tracks. Ether is a slow, dirgelike piece with a spoken-word lyric – in German – that builds to a fullscale string orchestra groove over almost a trip-hop beat and a trance-inducing bass pulse, and then fades down like the first number. Velvet begins with an austere fugue between the violin and cello and then begins to sway on the waves of a catchy descending progression. It builds intensely with dramatic cymbal crashes and a cello bassline, then ends cold when you’d least expect it.

There are three other long pieces here, all of them instrumentals. Ungaro is a playful, bouncy tarantella dance. Cuetara gets a brooding minor-key vamp going over a slinky Levantine-tinged groove, Thiem soaring over a lush bed of strings and stark, staccato cello accents. The album ends as it began with a majestic one-chord jam, the aptly titled Shadows, Thiem’s long Middle Eastern opening taqsim building slowly, picking up other textures along the way, taking a bit of a lull for another long solo and ending on a surprisingly jaunty note. Although pegged as electroacoustic, there isn’t much going on here that’s electro other than the occasional atmospheric keyboard part. Copal are a deliriously fun live band – they play the cd release for this album on Nov 4 at Drom, headlining at 10 PM on a killer triplebill with haunting Egyptian film music revivalists Zikrayat opening at 8 followed by Middle Eastern-flavored rockers Raquy & the Cavemen at 9.