Fear of premature burial is discussed at length in "The Romeo Error" (early '70s) by Lyall Watson, who had previously written the fortean-ish titles "Supernature" and "Gifts Of Unknown Things". I seem to remember that little bell towers above graves with bell ropes threaded down pipes into coffins were big in Italy for a while.

In the words of Bill Drummond "The KLF were from another era and all talk of them should be supressed." A pity the K Foundation didn't carry out their proposed New Year's Eve 1999 project to "fix Stonehenge while everyone was out partying".
My mate Dave and his mate Kurt recently won an award from the foundation now curated by Drummond (and, I think Mark Manning aka Zodiac Mindwarp )based in Cushendall, Ireland.
For an overview of Drummond's current work see his - NSFW - family of websites at penkilnburn .
I would contend that Drummond & Cauty are legitimate artists. Legitimate popstars? What's that mean?