An escape sequence is a series of characters used to change the state of computers and their attached peripheral devices. These are also known as control sequences, reflecting their use in device control. Some control sequences are special characters that always have the same meaning. Escape sequences use an escape character to change the meaning of the characters which follow it, meaning that the characters can be interpreted as a command to be executed rather than as data.

Escape sequences are commonly used when a computer and a peripheral have only a single channel through which to send information back and forth. If the device in question is "dumb" and can only do one thing with the information being sent to it (for instance, print it) then there is no need for an escape sequence. However most devices have more than one capability, and thus need some way to distinguish information that is to be treated as data from information that is to be treated as commands.

An escape character is usually assigned to the Esc key on a computer keyboard, and can be sent in other ways than as part of an escape sequence. For example, the Esc key may be used as an input character in editors such as EMACS, or for backing up one level in a menu in some applications. The Hewlett Packard HP 2640 terminals had a key for a "display functions" mode which would display graphics for all control characters, including Esc, to aid in debugging applications.

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.