The first album in The King’s Singers’ Head Space series, aims to connect choral music with calmness and reflection. Inspired by compline, the Catholic night service, it features plainchant, including “In manus tuas Domine” and “Salva nos Domine vigilantes,” emphasizing breath-led pacing. The album also includes four of Orlando Gibbons’s wordless song settings (two of which include an additional voice performed by cornett player Jeremy West), contemporary pieces by Anna Thorvaldsdottir, Judith Bingham, and Arvo Pärt, and the experimental “4’33” by John Cage, concluding with Robert Parsons’ “Ave Maria” and Edvard Grieg’s “Ave Maris Stella,” all designed to create a contemplative atmosphere. In summary: fourteen tracks (well, thirteen, if you don’t count the Cage …) of artful tranquility.