Laravel 5.1 - Join through multiple tables

I have the following tables:

Customer
    id

Order
    id
    customer_id

Order_notes
    order_id
    note_id

Notes
    id

If I want to get all order notes for a customer so I can do the following, how can I do it? Is there way to define a relationship in my model that goes through multiple pivot tables to join a customer to order notes?

@if($customer->order_notes->count() > 0)
    @foreach($customer->order_notes as $note)
        // output note
    @endforeach
@endif

via Chebli Mohamed