markup and variables

[Tanguy]

hello, and happy new year

I'm trying to add markup above a variable, is it possible ?

eg: ----------------------------------------------
  
   theme= \notes {
   c c c c
   }

   \score
       {
       \notes
           {
               \key ees \major
               \time 4/4

               \theme     % here i want to put a markup
               \theme     % and there another one
           }
       }
  
--------------------------------------------
how can i do this ?
it seems that the \markup must be "tied" to a note or a rest but
not a variable...
shall i have to type c c c c instead of \theme to be able to put a markup?
i tried things like this:
   \theme ^\markup { my text }
but lilypond won't take it...



ps: sorry if my english is bad