No matter how audiences receive “Another Earth” when the Sundance drama tinged with sci-fi elements opens Friday here in the 405, one thing is certain: Its stellar soundtrack is heavenly.

Eighteen of its 19 tracks are original compositions from new duo Fall on Your Sword, a new project of composer Will Bates and LCD Soundsystem’s Philip Mossman. Here, they’ve crafted an ethereally threaded, warm blanket of trippy, downtempo instrumentals, delivered atop a bed of understated electronics and orchestral instruments. Think a toned-down Tangerine Dream as remixed by Two Lone Swordsmen.

The album opens and closes with variations on its stark, sonic theme, “The First Time I Saw Jupiter,” whose simple melodics and stick percussion result in instant accessibility and addiction. “Rhoda’s Theme” seems beamed from space, accompanied by a ghostly wisp of an angelic voice, while “Making Contact” breaks out of the box to offer some ominous vibes via strings. I don’t know what pep meds “Rhoda’s Theme/Returning to John” are on, but I want some.

The disc is peppered with a number of short, piano-driven bits like “Bob the Robot” and “House Theme,” serving as transitional bridges to the showier numbers. Another track doing the same is Phaedon Papadopoulos “Sonatina in D Minor,” a straightforward piano piece that’s not out of character, given the tone Fall on Your Sword establishes.

If the movie proves even half this good, yum. —Rod Lott