Bass Function Collapse

Bass function collapse is the phenomenon of hearing music through your phone speakers, and then putting on your headphones to hear the bass, only to find out that the bass notes (and therefore the chords) are different from what your phone led you to believe. This phenomenon can be especially frustrating if you, having initially listened on a phone, automatically filled in the gaps with notes that sound better than what ended up being on the recording.

It's thought by some that in the era of social media, this phenomenon can be exploited by musicians to go viral by intentionally releasing music that sounds impossibly good on a phone (at the cost of its actual collapsed version).

"I heard this song on TikTok and looked it up afterwards, but I was really disappointed with the bass function collapse."

"The bass function collapse on this song is brutal. Hearing it with headphones makes it surprisingly unlistenable."