Gracenote ***provides its media management technology and global media database of digital entertainment information to the mobile, automobile, portable, home, and PC markets***. Several software applications which were capable of playing CDs (e.g. Media Go and iTunes,) used Gracenote's CDDB technology.
https://en.wikipedia.org/wiki/Gracenote#:~:text=Gracenote%20provides%20its%20media%20management,%2C)%20used%20Gracenote%27s%20CDDB%20technology.