[ Ref. Dave Vincent in 170131 MMDigest ]
Hello MMD, we have a multitude of Dutch subscribers on here who
will know way better then I do, but from my knowledge:
- Biphone on Melody is usually a single rank to be mixed with
- Biphone on Countermelody are two ranks in "Schwebung" (wobbled)
off-tuning. [Similar to Celeste and Unda Maris voices. -- Robbie]
As our Editor posted, these are by default played in Tremolo throughout.