In 1969 schreef Mick Jagger een brief aan M.C. Escher met het verzoek een afbeelding van hem te mogen gebruiken op zijn nieuwe album. Die brief begon als volgt:
Dear Maurits,
For quite a time now I have had in my possession your book [Graphic Works of...] and it never ceases to amaze me each time I study it! In fact I think your work is quite incredible and it would make me very happy for a lot more people to see and know and understand exactly what you are doing. In March or April this year, we have scheduled our next LP record release, and I am most eager to reproduce one of your works on the cover-sleeve. Would you please consider either designing a "picture" for it, or have you any unpublished works which you might think suitable...
Escher antwoordde binnen een paar weken met het volgende, gericht aan de agent van Jagger:
Dear Sir,
Some days ago I received a letter from Mr. Jagger asking me to design a picture or to place at his disposal unpublished work to reproduce on the cover-sleeve for an LP record.
My answer to both questions must be no, as I want to devote all my time and attentions to the many commitments made; I cannot possibly accept any further assignments or spend any time on publicity.
By the way, please tell Mr. Jagger that I am not Maurits to him, but
Very sincerely,
M.C. Escher