Rauelsson's third solo album for Sonic Pieces focuses on simplicity and minimalism. It recalibrates his love for ambient with an austere approach that conjures an atmosphere of silence and solitude. On Niu, the artist has traded his craft for shimmering layers of sound clusters and electronic editing in favor of a predominantly raw and acoustic recording.

Recorded primarily in Sofia and Berlin and mixed at Saal 3 of Funkhaus Berlin, Niu presents a 9-song journey that includes orchestral compositions, delicate synth miniatures, and sparse brass and woodwind drones with room for spoken word and a hint of psychedelic noir fable. The result is an album that, despite the eclectic choice of instrumentation, paints a landscape of spiritual clarity; an album that without being typically classical, still feels like a classical album. Three themes vary across the 9 pieces, starting with the purely orchestral "Prelude No. 7" before moving on to airy synth bass arpeggio and pedal steel. With more changing instruments, Raúl next takes us into a fairytale flute composition with guest flutist Heather Woods Broderick and brass vibrations by the trio Zinc & Copper. Finally, Katrine Grarup Elbo recites a poem by Raúl, ending the piece on a somber but beautiful note. The rest of the album continues in this vein, creating a unique sound that surprises the listener at every turn. Niu is a real departure from the artist's previous works in both scope and musicality. Everything was recorded without overdubs and with only minimal editing, trying to preserve the feeling of music coming from a room where musicians play live. Overall, this is music that finds comfort in movement as much as in pause and silence; music in which tenderness and tension exist in the same gesture.

The album also follows a certain mysticism with its poetic interludes, alternate track lists and titles like "Podium Of Riddles", "A Keyhole-Shaped Island" and "Ceramic Swallows, Set Of 3". Perhaps, given enough time, a hidden meaning or a new perception will be revealed. Niu is also set to be expanded into an art book, containing poems and photographs by Raúl, as well as an exhibition. Perhaps the key lies somewhere in there.