Released for the first time in 2011, Summvs is the fifth and final installment of Alva Noto and Ryuichi Sakamoto's V.I.R.U.S. series. The title Summvs refers to the Latin word 'summa' (eng. sum) and 'versus' (eng. towards); it serves as a metaphor for the work being oriented towards a collaborative result. The album features Microon compositions containing recordings of a 16th tone interval tuning piano – Piano Metamorfoseador Carrillo en Dieciseisavos de Tono. The album also features two covers of the track By This River, composed by Brian Eno, Dieter Moebius, and Hans-Joachim Roedelius in 1977.

In the album's twelve compositions, Sakamoto's haunting piano arrangements coalesce with Nicolai's digital rhythms, creating a sonic aura as magnetic as it is meditative. Remastered in 2021 in collaboration with Calyx Studio, the album's recordings are accompanied by two new compositions titled Monomom (released digitally in December 2021) and Kizuna. Like Monomom, Kizuna is the studio version of the homonymous composition recorded during Alva Noto & Ryuichi Sakamoto's 2019 Australian tour and included in the album TWO Live at Sydney Opera House (2019, NOTON). The word Kizuna means 'human bond' in Japanese and refers to the title of an animation piece by the Italian contemporary artist Valerio Berruti released in Japan in January 2011.

Album art designed by Carsten Nicolai
Mastering by Bo @ Calyx