End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
바이트 레벨에서 분석한 표준 미디(Standard MIDI) 사양 및 구조 http://yoonbumtae.com/?p=4077