Synth music style invented around 30 years ago on technology that didn't exist a generation ago: "This sounds old-fashioned, the developers need to evolve."
Orchestral music played on instruments that have existed for thousands of years, in a style that's existed for hundreds: "Finally, a modern sounding ost!" 
id got trent reznor to make quake 1's soundtrack. it was great.
There were a couple cases were a dev got an artist or band to do the soundtrack and that shit fucks too