Abbreviation for markup?

[Helge Kruse]

Is there a way with a music-function or something similar to define an 
abbreviation?

{

  r4_\markup \concat \vcenter { D\sharp } r4 c'' dis' |

  a'_\markup \concat \vcenter { D\flat } b' c'' d' |

}


Each to time I add the harp lever (or pedal) instruction I write much 
more levers than music. I would like to do it somehow like this:

{
  r2\setlever{ D\sharp } r4 c'' dis' |

  a'\setlever{ D\flat } b' c'' d' |

}


Regards,
Helge