Virtual orchestra--A virtual orchestra is an orchestra that is assembled by using samples and samplers. Typically, a virtual orchestra is used to "fool" the listening public and can be used in many situations including composer's orchestral demos, final productions, works in progress. As technology has advanced, the final products created with MIDI orchestration (virtual orchestration) have grown more advanced and realistic. Libraries such as East West Quantum Leap Symphonic Orchestra (EWQLSO), Vienna Symphonic Library (VSL), Garritan Personal Orchestra (GPO), Complete Symphonic Library by Sonivox and others have made the task of creating exceptional orchestrations easier.