I looked around YouTube and could not find many videos of people singing into the RE20. Here is a simple video of me singing an old folk song into this dynamic Mic. I used a Carvin Electric guitar plugged into a VOX Tonelab into a Joe Meek Channel strip so that the Mic would only pick up my vocals.
Chain: RE20, Cloudlifter, Joe Meek OneQ, Apogee Quartet, Logic Pro