We can manually add listens in ListenBrainz, but to make this efficient when listening to multiple songs or albums we need to be able to add multiple at once.
In particular so that we don't have to manually work out timestamps when entering a string of song listens (e.g. I started listening at 2pm, song 1 is 2 minutes long, so I listened to song 2 at 2:02pm, etc....).

The final design mockups in LB-1157: Provide a way to manually add a listen on the website already include this function, so hopefully this is ready to implement.

If LB-1401: Manually add album listens is done before this ticket, the mockups in LB-1157 include queuing album submissions as well.