Key Error when running some of the examples

[soleyhyman]

I've just recently downloaded STRAUSS and have been playing around with the examples. In several of the examples where there is a chord used, I've been getting a Key Error when I try to run the cells. For example, in the AudioCaption example, when I try to run the sonification function in third cell (without the captioning), i.e.,

#caption_en = 'In the following audio, a glockenspiel is used to represent stars of varying colour.'

# render at default 48 kHz rate
soni = Sonification(score, events, generator, system) #, caption=caption_en)
soni.render()
soni.notebook_display(show_waveform=0)

I get the following error:

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
Cell In[12], [line 6](vscode-notebook-cell:?execution_count=12&line=6)
      [4](vscode-notebook-cell:?execution_count=12&line=4) soni = Sonification(score, events, generator, system)
      [5](vscode-notebook-cell:?execution_count=12&line=5)                     # caption=caption_en)
----> [6](vscode-notebook-cell:?execution_count=12&line=6) soni.render()
      [7](vscode-notebook-cell:?execution_count=12&line=7) soni.notebook_display(show_waveform=0)

File c:\Users\soley\anaconda3\envs\soni\Lib\site-packages\strauss\sonification.py:162, in Sonification.render(self, downsamp)
    [159](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/sonification.py:159) sourcemap['note'] = note
    [161](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/sonification.py:161) # run generator to play each note
--> [162](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/sonification.py:162) sstream = self.generator.play(sourcemap)
    [163](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/sonification.py:163) playlen = sstream.values.size
    [164](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/sonification.py:164) if 'phi' in sourcemap:

File c:\Users\soley\anaconda3\envs\soni\Lib\site-packages\strauss\generator.py:871, in Sampler.play(self, mapping)
    [865](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/generator.py:865) utils.linear_to_nested_dict_reassign(mapping, params)
    [866](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/generator.py:866) # for p in self.preset.keys():
    [867](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/generator.py:867) #     if p not in mapping:
    [868](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/generator.py:868) #        mapping[p] = self.preset[p]
    [869](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/generator.py:869) 
    [870](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/generator.py:870) # sample to use
--> [871](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/generator.py:871) samplefunc = self.samples[params['note']]
    [873](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/generator.py:873) # note length
    [874](file:///C:/Users/soley/anaconda3/envs/soni/Lib/site-packages/strauss/generator.py:874) if params['note_length'] == 'sample':

KeyError: 'Db3'

Do you have any idea what might be causing this and/or how to fix it?