Does ACID Pro 11 come with a harmony plug in? What about an auto tune or pitch correct plug in? If not, what software is best suited for compatibility with acid pro 11?
Harmony plugin = No, Pitch correction= Melodyne. If you learn how to use Melodyne you can do harmonies. Cheers
For harmonies just buy Quadravox off Plug-in Boutique. I'm pretty sure companies like Waves and others also have plug-ins for this. Eventide is cheap, easy to install, and requires no management bloatware on your PC (if you already use Waves, that is not going to be an additional headache for you).
Melodyne will require either an upgrade to a higher SKU, or for you to duplicate audio tracks and pitch them independent of each other with the Essentials SKU.
Cubase and Samplitude Pro X can create harmonies with VariAudio and Elastic Audio, should you have access to either of those.