Understanding the Output from a microphone

[Idahowalker]

@harveyspec33

But the readings gradually increase. Anyone know why?

A suggestion, Ground A2.

With A2 grounded.

@harveyspec33

void loop() {
  // put your main code here, to run repeatedly:
analogRead(A2);
  int MicrophoneReading = analogRead(MicrophonePin);
  Serial.print("Microphone reading is ");
  Serial.println(MicrophoneReading);
  delay(200);

Did that sop the thing do from happening?