I have seen many inquiries about the #38C3 pause/break music, particularly on Matrix and IRC. In case anyone here is interested: the default C3 pause music is “Elektroeule - Irish Coffee”. It's available on SoundCloud at https://soundcloud.com/philotue/irish-coffee and C3VOC has an MP3 of it available at https://github.com/voc/cm/blob/refs/heads/master/bundlewrap/data/voctocore-artwork/files/default-pause-music.mp3

Edit!

I have been told that it might also have been https://youtu.be/C23E5grsczE

or https://isit38c3yet.com/pausen.ogg

and if not then it's almost certainly in this directory somewhere:
https://c3voc.mazdermind.de/testfiles/

Irish Coffee

Listen to Irish Coffee by Elektroeule #np on #SoundCloud

SoundCloud

A further update: I have been told that it might also -- depending on where you watched it and maybe what you are thinking about -- be one of these:

https://youtu.be/C23E5grsczE

or https://isit38c3yet.com/pausen.ogg

and if not then it's almost certainly in this directory somewhere:
https://c3voc.mazdermind.de/testfiles/

Chaos Communication Congress Pausenmusik

YouTube
@aNullValue das ist aber nicht die Musik, die in den Sälen lief?
@octokitty I am not there in person this year. I was told that they were using that (default) pause music, and some others agreed. It is definitely what VOC used for pause/break on the streams (and for the infobeamer stream).
@aNullValue @octokitty this is indeed not what they used
Chaos Communication Congress Pausenmusik

YouTube
@aNullValue I don't think it was this one, I remember this one will, I think they stopped using it when we went to Leipzig
Chaos Communication Congress Pausenmusik

YouTube