There is more than one artists with this name, including:
1) SYO is a Japanese female vocalist.
2) Syo is a French folk band.
1) SYO is a Japanese female vocalist and member of the doujin music circle SOUND HOLIC.
She also provided vocals to several songs for the doujin music circle CYTOKINE/ZYTOKINE.
2) Syo is a French folk band. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.