Once you've installed
a Vocaloid font on your PC, you define a melody, either by importing a kind of digital sheet music called MIDI or by manually entering the notes on a scale.
Not exact matches
The resulting collection of audio snippets creates what the
Vocaloid developers call
fonts.
As the software improves and the library of
fonts expands, the
Vocaloid approach will no doubt become irresistible to those who harbor musical ambitions but who nonetheless get alarmed looks while belting out the national anthem at baseball games.