Hello, nice to meet all the Alexa's out there. Will you help me? heard a little ticking noise idling the other day progress from when I parked after a run, then seems now to a constant and when I rev as seen in the video you can hear the ticks at low RPM any ideas would be highly appreciated...

60k miles 2010 MS3, I have this ticking/chirping noise between idle and 2000rpms only when fully warmed up, I've had someone listen all around the timing cover with a stethoscope while I created the noise and they heard nothing out of the ordinary, the noise is still present with serpentine belt...