Weird behavor of a NodeMCU V.3 (ESP8266) LED/Buzzer

Hello,
i have soldered a Buzzer (without resistor) to D4 and Ground on my NodeMCU V3. Now every time when the LED lights the buzzer sound a bit as well...even when i programm?

How is this like it is? Is the D4 connected to the LED in a way??

thanks
SloopyHH