Audio files: add comments to specific points in the track

Hi all

Me and my colleague language teachers dream of an application that would make it possible to add a note/comment to a specific point of an audio track (a pupil's recording, for instance). The closest I've gotten is SoundCloud, but with that app I cannot show the comments to my pupils (unless I give them access to the account, which is a hassle).

Is there any genius who could make this a feature in H5P? Maybe as part of the audio record app?

Thanks in advance!