This looks like it'll be great - touring the UK next month. I'll be at the Edinburgh one.

https://makingtracksmusic.org/

Reference on Arabic music: your best bet is the very recent book by Johnny Farraj and Sami Abu Shumays, "Inside Arabic Music" (Oxford University Press). Packs a phenomenal amount in. It's based on a very long established website, so the content has been thoroughly pre-user-tested.