German program from 1984(?) which creates windows, displays text and plays the 'Pink Panther' theme.
https://www.youtube.com/watch?v=9L5inTFmkoI
Links:
https://www.cpc-power.com/index.php?page=detail&num=11899
https://en.wikipedia.org/wiki/The_Pink_Panther_Theme
Not emulated - original hardware and software.
Please note that the aspect ratio for this YouTube video is 16:9 but the CPC monitor
has an aspect ratio of 4:3 so you may wish to adjust your viewing device accordingly.