An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 metres. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains are key geologic elements of oceanic basins (the other elements being an elevated mid-ocean ridge and flanking abyssal hills). In addition to these elements, active oceanic basins (those that are associated with a moving plate tectonic boundary) also typically include an oceanic trench and a subduction zone.

Abyssal plains were not recognized as distinct physiographic features of the sea floor until the late 1940s and, until very recently, none had been studied on a systematic basis. They are poorly preserved in the sedimentary record, because they tend to be consumed by the subduction process. The creation of the abyssal plain is the end result of spreading of the seafloor (plate tectonics) and melting of the lower oceanic crust. Magma rises from above the asthenosphere (a layer of the upper mantle) and as this basaltic material reaches the surface at mid-ocean ridges it forms new oceanic crust. This is constantly pulled sideways by spreading of the seafloor. Abyssal plains result from the blanketing of an originally uneven surface of oceanic crust by fine-grained sediments, mainly clay and silt. Much of this sediment is deposited by turbidity currents that have been channeled from the continental margins along submarine canyons down into deeper water. The remainder of the sediment is composed chiefly of pelagic sediments. Metallic nodules are common in some areas of the plains, with varying concentrations of metals, including manganese, iron, nickel, cobalt and copper. These nodules may provide a significant resource for future mining ventures.

Jesper Kyd Jakobson (born February 3, 1972) is an award winning Danish video game, television and film score composer. Internationally renowned for composing the unique, signature music soundtracks for multi-million selling franchises Assassin's Creed, Hitman and Borderlands, Kyd’s distinctive scores feature a diverse array of orchestra, choir, acoustic manipulations and electronic soundscapes, immersing audiences with emotional depth often described by critics as ‘rousing,’ ‘surreal’ and ‘beautiful.’^{[citation needed]}

Kyd started playing piano at an early age. Later, he took several years of training in classical guitar, note reading, choir singing and classical composition for piano. However, he is mostly self-taught. Kyd was always more interested in the compositional aspects of music and received a Commodore 64 when he was 14, enabling him to compose music for the demoscene. Several years later he obtained an Amiga, allowing him to compose music with samples in it. He, along with his good friend and collaborator, Mikael Balle, became a member of the demo group Silents DK, and after some time started collaborating with a group of coders known as Crionics, which would arguably later prove vital for his professional career. They eventually made the legendary Amiga demoscene production Hardwired. He also created and scored the first wild demo, Global Trash 2, together with Mikael Balle.