The scope of delivery includes (USB-C wired) headphones, which are very similar to the iPhone headphones. Thanks to the USB-C to jack 3.5 mm adapter that is also included, you should also be able to use your existing favourite headphones. So you don't necessarily have to buy new Bluetooth headphones to listen to music.

No, you can also use an adapter USB-C --> jack 3.5mm and thus use normal headphones. (I'm not sure, but I think that an adapter is included in the scope of delivery).