Hi @defossez 
It’s ok if you cant answer all of these questions 
How much extra data did you use for leaderboard B?
Could you make Demucs better if there was a longer time limit for predictions?
Did you use model blending for your submissions?
Are you going to keep working on Demucs to try and make it even better?
When can we train our own models on the new Demucs and when can we read your paper about it?
Thanks !