Vast or VAST is the name of more than one artist:
1) American industrial rock band
2) trance, alias of Bernie Eller
3) Drum n Bass
1) VAST stands for Visual Audio Sensory Theater, and is the brainchild of Los Angeles-based singer-songwriter and musician Jon Crosby.
VAST's sound is identifiable as ambient electro-rock with considerable industrial and acoustic influences, usually made with Crosby's traditional acoustic guitar, electronic instruments and processing, drum-driven tracks, and heavy bass.