A matching folio is a collection of printed sheet music for a particular album, i.e. the folio “matches” the album.
![Keys electronic synthesizer](https://cdn.artistbiolink.com/images/keys-electronic-synthesizer-768x512.jpg.webp)
How Does A Music Synthesizer Work?
A music synthesizer makes sounds by using an electrical circuit as an oscillator to create and vary the frequency of sounds in order to produce different pitches.