\version "2.18.2"

#(define djembe '(
         (dbass            default   #f           -2)
         (dbassmute        default   "stopped"    -2)
         (dbassopen        default   "open"       -2)
         (dopen            default   #f           0)
         (dopenmute        default   "stopped"    0)  
         (dopenopen        default   "open"       0)  
         (dslap            default   #f           2)
         (dslapmute        default   "stopped"    2)
         (dslapopen        default   "open"       2)        
         (sidestick	   cross     #f           -4)))

% no abbrevation for the open variant, it is hardly used
drumPitchNames.dbass      = #'dbass 
drumPitchNames.dba        = #'dbass  % db seems to be in use
drumPitchNames.dbassmute  = #'dbassmute
drumPitchNames.dbm        = #'dbassmute  
drumPitchNames.dbassopen  = #'dbassopen    
drumPitchNames.dopen      = #'dopen   
drumPitchNames.do         = #'dopen  
drumPitchNames.dopenmute  = #'dopenmute 
drumPitchNames.dom        = #'dopenmute  
drumPitchNames.dopenopen  = #'dopenopen  
drumPitchNames.dslap      = #'dslap   
drumPitchNames.ds         = #'dslap 
drumPitchNames.dslapmute  = #'dslapmute
drumPitchNames.dsm        = #'dslapmute
drumPitchNames.dslapopen  = #'dslapopen 

% assign to full name, assign to abbrevation does not work.
midiDrumPitches.dbass = g
midiDrumPitches.dopen =  a
midiDrumPitches.dslap =  b
midiDrumPitches.dbassmute = fis
midiDrumPitches.dopenmute = gis
midiDrumPitches.dslapmute = ais  

djEen =  \drummode { dba4 do }

% with with section of context
% Line count and instrumentname correct processed
\markup { with section }
\score {          
   \new DrumStaff    
    \with {
      \override StaffSymbol.line-count =  #3
      instrumentName = #"Djembe 1" 
      drumStyleTable = #(alist->hash-table djembe) 
    }     
    \djEen  
}

\markup { without the use of the with section }
% generate error
\score {          
   \new DrumStaff  {  
      \override DrumStaff.StaffSymbol.line-count =  #3
      DrumStaff.instrumentName = #"Djembe 2" 
      DrumStaff.drumStyleTable = #(alist->hash-table djembe) 
   } 
   \djEen 
}