A very skilled pilot takes a Saab Gripen fighter jet through its paces, and his audio from the recording indicates just how physically and mentally taxing this kind of flying is.
From the description:
The Saab JAS 39 Gripen is a light single-engine multirole fighter aircraft manufactured by the Swedish aerospace company Saab. It was designed to replace the Saab 35 Draken and 37 Viggen in the Swedish Air Force (Flygvapnet). The Gripen has a delta wing and canard configuration with relaxed stability design and fly-by-wire flight controls. It is powered by the Volvo RM12 and has a top speed of Mach 2. Later aircraft are modified for NATO interoperability standards and to undertake air to air refueling.
It also seems especially daunting that they do stuff like this over populated areas.