I made "GET UP" (alternatively known as "YOUR NEW MORNING ALARM") by Marc Rebillet into a Heist Soundtrack, I used this as my source: https://www.youtube.com/watch?v=Gj43NTveEnI.
This doesn't replace anything and instead uses the beardlib feature to add custom Soundtracks by putting them into the mod_overrides folder.

To install this you'll have to install SUPERBLT and Beardlib, download and extract the zip folder into your mod_overrides folder (located in PAYDAY 2/assets, make it yourself if it isn't there already).

Disclaimer; I'm not Marc Rebillet / the creator of this music track, he provided a free download link to the ringtone on his twitter though:
https://twitter.com/marcrebillet/status/1377656348847013893
so I'm, as far as I know, legally allowed to use it.

TODO:

• Clean up the transitions a bit (This will never not be here)
• Add, if possible, more of the other louder phases of the original audio into assault phases (maybe picked randomly?) and do the same thing for his more un-eventful phases, playing those in the control phases.
• (If not possible; make other versions of the audio where I use other material for the different phases, which would especially be great for people who use shuffle-music mods in payday (like the Pocohud feature.)

Always open for suggestions and feedback.