Can a rule for pronouncing Danish <a> be generalised as follows?
<a> is pronounced [æ] or [ɛ] unless it is before [ŋ], in which case it represents [ɑ].
Apparently, according to Wikipedia, there is an ongoing vowel shift in Danish, and the vowel system is unstable, which may add to the confusion, with many pairs of formerly distinct vowels merging...
NB for those not familiar with linguistic notation -- < > denotes orthography, the way things are written; [ ] denotes phonetic transcription, a representation of how things sound. Audio clips for each of the IPA symbols used above can be found with the help of Google and Wikipedia.