I'm sorry for any confusion, but it appears there might be a mix-up. The details provided don't match a widely recognized artist or band named HISS. Without more specific information about the genre, origin, or members of the band, it's challenging to produce an accurate biography. The titles "Will," "Journey," "Ecclesia," and "Subset I" could potentially be from an emerging or niche artist that hasn't yet gained mainstream recognition, or they might even be from separate artists altogether.

To give you a general template for a musician or band with these apparent releases, it might look something like this:

HISS emerges as an enigmatic entity in the contemporary music landscape, weaving auditory narratives that captivate the introspective listener. With evocative releases such as "Will," "Journey," "Ecclesia," and "Subset I," HISS's music is characterized by its exploratory nature and emotional depth. Unbound by genre conventions, the artist or group crafts soundscapes that blend elements of ambient, experimental, and electronic music, with each track inviting audiences on a unique sonic expedition.

Their latest work, "Subset I," suggests a penchant for thematic series and showcases their adeptness at constructing cohesive, yet thematically diverse musical experiences. While details about HISS's background, formation, and members are shrouded in mystery, their artistic output speaks volumes about their dedication to pushing the boundaries of musical expression. Through layered compositions and thought-provoking rhythms, HISS continues to build a dedicated following of listeners in search of transcendence and innovation in their music discoveries.