Below are the locations of the music discs in Chapter 8 of Final Fantasy VII Remake!
Chapter 8
21. Cait Sith’s Theme
Purchase for 50 gil from a vending machine located next to the Sector 5 Slums Undercity Station.
19. Costa del Sol
Purchase for 50 gil from the Materia Shop in the Sector 5 Slums Center District.
20. Gold Saucer
Purchase the disc for 1 Moogle Medal from the Moogle Emporium in the Children’s Secret Hideout in Sector 5 Slums Central District.
25. Tango of Tears
Interact with the Jukebox in the Sector 5 Community Center located in Center District.