优声国际在全球范围内分布着大量的艺术家，为全球的优声会员提供专属的定制服务。海内外的艺术大咖通过线下、线上、直播等方式，定期让我们的会员与大咖零距离接触、示范性教学。

What is the UMASTER?

The rendezvous of domestic and foreign famous players. Unsn let our members to contact with those famous players by using live performance regularly.