The TC in RealBand can auto tune based on a MIDI track, but it does transform the audio into one with some artifacts. I prefer to auto tune first using Melodyne, then using the TC-Helicon to do the harmony.

Laptop-HP Omen I7-10750H Win10Pro 32GB 2x1TB SSD/2TB SATA
Desktop-ASUS-I7-3770 Win10Pro 32GB 3x2TB SATA

BB2022/UMC404HD/Casios/Cakewalk/Reaper/Studio One/MixBus/Notion/Finale/Dorico/Noteworthy/NI/Halion/IK