Define Corporate Pop Meaning

It's the end of the workday, and the traffic's very bad, so getting to the store takes way longer than it should, and when you finally get there the supermarket is very crowded, because of course it's the time of day when all the other people with jobs also try to squeeze in some grocery shopping, and the store's hideously, fluorescently lit, and infused with soul-killing Muzak or corporate pop, and it's pretty much the last place you want to be, but you can't just get in and quickly out. -- This is water. David Foster Wallace.

"He had nothing in, I was sat drinking corporation pop all night."