TC-Helicon VoiceTone C1

Does what you would expect. Really easy to use and not audible delay in the signal path. Just awesome and easy to use.
And don't be fooled: the scales-knob seems to only offer major keys and chromatic key. But you can look up the relative scales and set the relevant major key to match your minor key.

A great little vocal pedal, I use this as part of a theatre rig where some performers need a little help with their vocals. The pedal can be used to help the best singers and the worse singers and can be used very subtly to enhance a performers voice and can be used a little less subtly to correct a bad singer. It it a great tool to have in the weaponry and I would argue that for the price it is the best value money and the product is a great tool.

Nice product. Easy to use with excellent sound.

This is hands down the best autotuner.

Doing what is is suppoed to do.