I want to develop an app that creates a vocal harmony for a recorded vocal line.
App allows the person to sing/speak into the inbuilt mic and record their vocal line.
Once this vocal line has been recorded the app then creates a harmony line at a definable harmonic.
Would be nice to have the ability to have a number or harmonies and also to input the chords to ensure harmonies sort the particular chords.
There are many guitar pedals that do this digitally but no decent apps yet.