use, usage, utilization, application / exploitation, taking advantage of

VOCALOID (singing voice synthesizer engine/software developed by YAMAHA) / VOCALOID (product that utilizes this technology, or its associated character)

the sound of singing; singing voice

artist (person who creates art) / recording artist

a lot / a majority

largely; mostly

production

production

(engineering) an engine, a mechanical device

use, utilize / exploit, take advantage of