bug#71523: [guix-artwork] Include Gottfried’s song "Guix"

[pelzflorian (Florian Pelz)]

Hello all.  As you may have read in help-guix, Gottfried has written and
interpreted and shared under CC-BY-SA 4.0 a song about Guix [1][2][3].
I wish to ask Guix maintainers, would it be okay to upload it to
guix-artwork.git?  It is not just a tune; inevitably, the song has
praise and opinions, unlike let’s say guix-artwork.git’s display manager
background images.

Cc to Ludo, who is praised in the song, and to Gottfried, the author.

gfp <gfp@posteo.at> writes
<https://lists.gnu.org/archive/html/help-guix/2024-05/msg00187.html>:
> Hello,
>
> thanks to all for helping me to share the song "Guix".
>
> Now it is shared under the license:
>
>
> "Guix" © 2024 by Gottfried Preihs is licensed under CC BY-SA 4.0   

Gottfried uploaded the song at mytuxedo.org, where it was temporarily
available only.  I received in private and complied with a request to
share the no longer public file.  Temporarily it is available at [1]
with lyrics [2] but I do not have the musescore files nor other formats
like .ogg, which Gottfried had published.

Regards,
Florian

[1] http://[2a02:810b:5c40:f04:defe:7ff:fee1:396f]/Guix.mp4
[2] http://[2a02:810b:5c40:f04:defe:7ff:fee1:396f]/Guix.pdf
[3] https://lists.gnu.org/archive/html/help-guix/2024-05/msg00011.html