https://marco.org/2008/05/05/i-remember-finding-out-part-way-through-the
I remember finding out part way through the project that the audio team were storing the amount of money in each character’s pocket — each pocket, mind you, that’s left and right — so that they could mix in the right amount of change-jingling noise as they walked past.
— GTA IV’s Art Director Aaron Garbut. Nice quick interview.