a form of art that involves real-time computer graphic effects accompanied by music

a program that displays a sound, music, and light show

a program that displays lovely graphics, stretched to the extremes of what is possible with todays technology added with catch, groovy music tracks

a program that will stop working or cause problems on a PC if used beyond a trial period

a short multimedia program and there are contests where people show them

Demonstration; a tape intended to reflect the content, style, and quality of a musical composition, program, or on-air personality.

A demo is a non-interactive multimedia presentation made within the computer subculture known as the demoscene. Demogroups create demos to demonstrate their abilities in programming, music, drawing, and 3 D modeling. The key difference between a classical animation and a demo is that the display of a demo is computed in real time, making computing power considerations the biggest challenge.