Techniques for accidentals
General mountain dulcimer or music discussions
Handling Accidentals
1. Skip them entirely with sustain of the previous note occupying the measure. Or play either the note before, or the note after, for the same measure as the 'missing' note. Most of the time, if the audience knows the song, they will 'hear' the missing accidental. If they don't know the song it doesn't matter. This was a very common traditional approach, as many players seem to have used an Octave tuning (Ddd, Ccc, etc) rather than Modal tunings like Ionian (DAA), Mixolydian (DAd), Dorian (DAG) or Aeolian (DAC)
2. Re-tune -- it's only one string and should take less than a minute while you're introducing the next number! Create sets of tunes in each tuning that you use; rather than playing one song in this tuning, the next in something different. It's easy find half a dozen songs in each of the common Modal Tunings.
3. Bend the melody string. Try removing (permanently or temporarily) one of the doubled melody strings until you learn to bend a pair.
As a 99.5% N&D or Fingerdance traditional player, numbers 1 & 2 are my options of choice, and my choice depends on the missing note(s) in which tuning