It’s easy to take the Internet for granted, given how ubiquitous it is these days. A couple of decades ago, it would have been unthinkable for someone like me who lives in the United States to stumble upon music made by a group from Eigg. Hailing from this small Scottish island—with a population of only about 100—Joe Cormack and Pete Colquhoun formed Electric Sun Defence following the early dissolution of their former group, The Massacre Cave, after just one album that was released in 2020. Estuary represents the next step along this trail of spirited progressive/post-metal that these two bandmates began blazing years ago.
It turns out that Estuary is an apt metaphor for Electric Sun Defence’s music. Estuaries, formed when freshwater rivers mix with the salty ocean, account for some of the world’s most productive wildlife ecosystems. Similarly, Estuary inhabits the sweet spot between the melodicism of prog and the coarse textures of post-metal. Much like The Ocean and Void of Light, Electric Sun Defence is prone to change from tranquil to tempestuous at a moment’s notice. The flurries of activity are glued together with delicious, delicate post-rock segments in the vein of pg.lost or Red Sparowes. The balance between these competing interests can feel fragile at times, but they manage to coexist and enrich their musical environment together.
Estuary’s standout strength is the masterful buildup and discharge of tension. This is immediately clear as the title track begins, layering bass and horns atop cymbal taps and serene guitars, then eventually erupting into a furious post-metal wave. “Fountain of Blood” takes things further with harsh guitar riffs that also contain the perfect amount of groove. “The Master’s Garden” deftly winds between glassy post-rock and distorted chords, climaxing with an intricate guitar melody. Though the intensity waxes and wanes, there is a clear trend of increasing aggression as Estuary progresses, becoming more like a combination of Cult of Luna and Dvne for the final two tracks, “Phantom Limb Amputee” and “In Bestia.” During the latter, Pete Colquhoun really gets to let loose with forceful and frenetic rhythms behind the kit. Don’t let the monochromatic album art fool you; Electric Sun Defence paints with a wide array of aural hues.
The dynamic composition is good, but when paired with an intuitive flow, the experience borders on transcendent. Each track fluidly transitions to the next, and the fact that none of them exceeds 8 minutes helps to keep Estuary from becoming stale. This is a rare instance of the shorter interlude tracks serving a larger purpose, albeit in a subtle way. “Spiderweb” is pretty enough that I can look past its bothersome soundbites, and “Dysmorph” functions as a reprieve while setting the stage for the raging “Phantom Limb Amputee” that follows. The grouping of these tracks with the shoegaze elements in “Choke Leper” causes the momentum to sag a little, but not terribly so. Another minor weak point is that the vocals—especially the cleans—can sound muffled, but the strength of the instruments helps compensate.
Though I entered Estuary with no expectations, it turned out to be exactly what I was looking for at the time. It keeps the listener guessing from moment to moment with the continual assurance that they’ll love whatever comes next. Electric Sun Defence shows their versatility by wielding both emotive melody and crushing ferocity. Albums like this make me pause and appreciate the privilege we have to conveniently access great music from all over the world. Electric Sun Defence might be the best metal group in Eigg by default, but they can give others in larger regions a serious run for their money too.
Rating: 4.0/5.0
DR: 8 | Format Reviewed: 320 kbps mp3
Label: Road To Masochist
Websites: electricsundefence.bandcamp.com | facebook.com/people/Electric-Sun-Defence
Releases Worldwide: May 8th, 2026
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