So do CDs. 💿 If you have a player with a see-through lid, you can see the disc rotate around 2.5 times slower on the last track of a near-74/80-minute disc as opposed to the first. This might not apply with modern (2000+) and/or portable ones with cache (ESP) − MP3 support is a good clue it has the advanced electronics for that. And yes, CDs’ track starts at the center to enable short-play, smaller disks of any diameter between 5 and 12 cm (although slot-loading players only have cutouts for the two standard sizes).

Players regulate the motor speed based on the data clock (and burners too: there is a pre-recorded “timing” signal even on blank CD-Rs) so technically, a constant-angular-velocity CD could be pressed and played on most players, just with no real benefits. The extra linear velocity at the edge would require increased laser power (or less than 1x speed) when burning, and vinyl killers (in the unlikely case they ever make a CD one) won’t keep up.