Musically speaking, the entire EP flows like a river. Guitars and keyboards stream forward, guiding listeners alternatively towards euphoric crests and cascading lows. Drifting along in these eddies of sound are trip-hop beats befitting the band's 2004 album Lunar Ecstasy. Each tune is consistently fluid and psychedelic, the end result feeling like a brief journey into the depths of a Zen master's mind.

The wistful "Owned Again" is the first meditation on offer, its introspective acoustic guitar chords soaring through ringing keys not unlike a church organ. Backed by an urgent, jittery percussion, the song hides massive force behind its seemingly low-key atmosphere. Sharp harmonic flourishes on the guitar intertwine with Sanders' mournful crooning, eventually building into a quiet moment of desperation. Drums thunder and fiery guitar notes spiral upwards, producing an intense crescendo rendered all the more disarming by the somber finale.

"Ascension Vibes" begins as a soft acoustic ballad before blossoming into a song infinitely larger in scope. Weighty percussion twists and turns behind hazy keyboard effects and claustrophobic guitar passages, eventually reaching heights where Sanders' vocals hover ethereal and free. Inspirational in tone and presentation, "Vibes" is definitely the feel-good moment of the entire EP.

Contrasting this is the release's title track, a blues-based slow-burner wallowing in creepiness. "Immortal Deadbeats" builds trippy grooves off its aggressive rhythm section, the drums pounding away methodically while the bass coils and snakes right out of the stereo. The true tipping point into nirvana, however, is the keyboards warping their way around the rest of the song. Hallucinatory and eerie, they generate a mood perfect for Sanders' biting lyrics and Beck-worthy vocals at song's end.

"Wash Me Away" ends the CD by conjuring serenity. Tribal drums rattle their way through thick bass lines and glimmering guitars. In the interim, Mountain Mirrors sinks into syrupy, tranquil rhythms laced with Quaaludes. Whispering ominously as the song wanders into a passage of shimmering chime beats, Sanders lets his voice vanish entirely. Following this, Deadbeats ends with a rousing section of crystalline percussion, seismic drums, and spastic guitar freakouts which is easily the EP's most powerful moment.

The Immortal Deadbeats EP adds another wrinkle to the Mountain Mirrors sound by reintegrating the band's formative trip-hop influences into their more recent dark acoustica. The latest in a mind-blowing set of releases, it adds plenty of highs for newcomers while retaining enough flashback potential for older fans. Reduced into a recipe, Deadbeats is half-Beck, half-Drake, all awesome.