The dynamic LA art-pop singer and composer Julia Holter returns to Chicago this summer to perform at the Pitchfork Music Festival, and a month later she’ll release her third album, Loud City Song (Domino). On last year’s superb Ekstasis (RVNG) she moved away from the appealingly raw, sample-rich dreamscapes of her 2011 debut album, Tragedy, for something smoother and more accessible. But obscured by her pop savvy is a deep investment in experimental music. Holter, after all, studied with Wandelweiser Group composer Michael Pisaro at CalArts and appears on his recent album The Middle of Life (Gravity Wave). She also turns up on the fantastic new album by composer Daniel Wohl called Corps Exquis (New Amsterdam). Released digitally just yesterday and available on CD beginning June 25, it’s a rich, eminently satisfying blend of acoustic chamber instrumentation (provided by the excellent ensemble named Transit) and electronics, steadily balancing elegant minimalist writing with pop-worthy melodic ideas, stately strings with flashes of abrasive noise. After the jump you can check out the video for the album’s final piece, “Corpus,” which features Holter’s wordless vocals floating through a dense but dreamy mix of violin, cello, bass clarinet, piano, vibraphone, and electronics.