I've just re-released my Raw Spectronica album with new recordings of some of the tracks and an additional 4 tracks.
3 of the new tracks were recorded from the new ZX Spectrum Next computer.

https://tufty1.bandcamp.com/album/raw-spectronica

Free download (just click on buy digital album and enter zero)

There's a CD too for any speccy/chiptune collectors out there