How to show relationships in same order as set in backend?

Peter, this is the code for the page.

{% set args1 = { post_type: 'repetitie-avond', posts_per_page: -1, orderby: 'date', order: 'asc' } %}
{% set posts = mb.get_posts( args1 ) %}

{% for post in posts %}
    <h2><strong>{{ post.title }}</strong></h2>
    <p>{{ post.content }}</p>
    {% set args2 = {post_type: 'muziek', nopaging: true, orderby:'none', relationship: {id: 'muziek-op-repetitie-avond', from: post.ID}} %}
    {% set muzieknummers = mb.get_posts( args2 ) %}

    {% set counter = 0 %}
    {% for muziek in muzieknummers %}
        {% set counter = counter +1 %}
        {% set post2 = mb.get_post( muziek.ID ) %}
        <p><a href="{{ post2.url }}">{{ post2.post_title }}</a></p>
    {% endfor %}

    {% if  counter == 0 %}
        Er is nog geen muziek voor deze avond vastgelegd. - no music yet - 
    {% endif %}
<hr />
{% endfor %}

Here is a short video of all settings involved: https://drive.google.com/file/d/1Ok9HploeRIkomw7uukIa7cuikxAFH1gN/view?usp=drive_link

Regards,
Eddy

Peter,

If I do that, they are shown in descending order of title, that's not the order in the backend.
That's why I tried orderby: none, hoping that it would result in the order of the backend, but it didn't work. That's exaclty why I started this thread.

So any advise?

Peter, it didn't make a difference, so I've set up an admin account for you, and sent the login credentials as requested.

Thanks, good luck.