Electronica 2: The Heart of Noise is the fifteenth studio album of French electronic musician Jean Michel Jarre. It is the second of a two-part album (the first being Electronica 1: The Time Machine) that is based around collaborations with other electronic musicians from a wide range of decades and styles. Electronica 1 included artists such as Vince Clarke, Gesaffelstein, M83, Armin van Buuren, John Carpenter, 3D (of Massive Attack), Pete Townshend, Tangerine Dream, and others, while Electronica 2 is expected to include collaborations with Pet Shop Boys, Rone, Julia Holter, Primal Scream, Gary Numan, Hans Zimmer, Edward Snowden, Peaches, Sébastien Tellier, The Orb, Siriusmo, Yello, Jeff Mills, Cyndi Lauper and Christophe. In all, the two-album collaboration is expected to have as many as 30 collaborators, and Jarre has described it as his "most ambitious project."
The first "5.1 Surround Sound" release on Aurora contains three works by Natasha Barrett. Barrett was born in England, but moved to Norway in 1999, and is a central figure on the Norwegian electro-acoustic scene. These pieces are written and developed in the electronic domain, and composed especially for the surround sound environment, however the composer has developed stereo versions of the pieces as well, which are found on the standard CD available in the package. The pieces on Kraftfelt (Force Field) take place in the space between the abstract moving and the concrete descriptive. In "…fetters…" the laws of physics control the dramatic and audial content.