명상음악/공부할때 듣기좋은 음악/집중력향상/집중음악/white noise/Concentrated music 명상음악 0 0 0 04.15 23:19 https://youtu.be/UyH88LuCAMQ + 21 명상음악/공부할때 듣기좋은 음악/집중력향상/집중음악/white noise/Concentrated music. 0 0