A synthesiser allegedly used by Stockhausen "for a series of performances of the opera 'Donnerstag Aus Licht' at the Royal Opera House, Covent Garden in 1985" is up for auction on Ebay.
The seller is one David Mellor - no not that one.
The instrument is by the seller's own admission knackered and prehistoric - but it does bear the great man's signature.
In black ink on black, of course.
