>> To summarize my post: I am trying to create a Norwegian equivalent
>> of the existing \germanChords command called \norwegianChords, which
>> I want to be based on the default English chord name convention,
>> with the following chord transformations:
>>
>> B -> H
>> Bb -> B
>>
>> This transformation must also apply for the base note for chords
>> having a base note.
>
> OK. What are the differences to `\germanChords` that you are after?
Sorry, silly question :-) You want English chord names.
Werner