Wolfgang Palm shared this preview of the Multi-Voice mode in version 1.1 of PPG Phonem.
PPG Phonem is a software synthesizer, for Mac & Windows, that’s designed for expressive vocal synthesis.
Multi-Voice mode lets you play up to four voices on one key, creating choir-like sounds. Each voices uses a shared preset, but will have slight variations that create the choir effect.
The update will be free to existing users and is expected to be available in December.