Tape is still being made in relatively large quantities - though along with the necessary drives it's optimised for digital data backup.
https://www.oracle.com/storage/tape-...ta-cartridges/
I wonder just how easy it would be to re-use this modern tape in an old-style analog application? Or indeed to adapt an entire robotic magtape-storage system to record/play analog audio?
[Exits stage right muttering stuff about Hysteresis, Coercivity and Oersteds]