Heavy metal outfit Nitro boasted "the fastest, loudest, highest sound around" -- frontman Jim Gillette's chief claim to fame was his ability to achieve a scream so high-pitched and piercing that it literally shattered the imported crystal wine goblets he carried on-stage for each performance. Gillette first met guitarist Michael Angelo at a beach party, and they soon collaborated on the former's 1987 solo album, Proud to Be Loud. While the singer was already known in metal circles for his instructional video series, Jim Gillette's Metal Power, Angelo was famed for inventing the Double V-Neck guitar, and in Nitro he pushed the concept to its illogical extreme with the Quad Guitar X-400, an axe with four necks in an X formation, each featuring seven strings.