Well... they hardly tried all genres :)

It sounds like it can't handle lyrics or semantics that well so I suspect any genre where the lyricism is important would also be quite mushy and recognizably AI

The sound sample seemed to fit the 'vibe', but lacked any discernible definition. Could it be that it's too sonically dense to easily reproduce? Perhaps this could be improved with a more tailored training set.

I think it was just the genre that was the least represented in the training data

dadabots here: haven't gotten good death metal with it. problem is there's not really much in the dataset.

It sounds more like break core haha