Add video 20 to the playlist of videos @TeamYouTube corrupted the audio on. It's been thirteen (13) days and @YouTube doesn't seem to care to look into this. @Vevo Despacito was back up in minutes. When can I expect a response? @SusanWojcicki? @rkyncl?https://www.youtube.com/watch?v=8XDNyoH0MSk&list=PL-ZKvhIgD8x2h1sesWFRHuBZEOp0Fo6WK …
These videos are 3-5 years old, no issues with playback until changes you made in Dec or Jan. Since you clearly have the original videos (can detect duplication) please restore videos to original uploaded form.