Hi guys, Welcome to the Advanced Video Search Engine, and you are watching ゾーンに入るBGM 1時間の勉強耐久 60分タイマーで全集中 50bpm音楽. That video is uploaded by study timer at 2022-06-22T02:00:35-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [p8O7wHutr-A]