This more than 30 years old Triumph-Adler Alphatronic P2 is still working. It can also play music. Here is a video how it plays the song Silent Night. This song is this year 200 years old.
If there video doesn’t work here, you can also watch in on YouTube.
The Alphatronic P2 computer was produced in the 1980s. It uses a 8085A cpu - my model uses actually a clone by AMD. It has 48kB RAM and 2 floppy disk drives. A Basic Interpreter is used here to run the program. But CP/M is also supported on this model.