Created a little patch based on a Mellotron Sample from these guys: https://sonicbloom.net/de/kostenlose-sb-mellotron-samples/
I run it through Icarus 2 Resynthesize Engine, exported the Wavetable and imported it into Vital.
Added some fx fairy dust on top … Best played slowely and with Octave-Clusters Enjoy 
Beautiful MelloDrone Choir.vital (1.6 MB)