Arduino code for play vocal

This code uses the SoftwareSerial library to create a serial communication between the Arduino and a Bluetooth module. The Bluetooth module should be connected to the specified RX and TX pins and set to 9600 baud rate.

Note that this code is just a basic example and may need modifications depending on the specific setup and requirements.

#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
void setup() {
  mySerial.begin(9600);
  pinMode(9, OUTPUT);
  digitalWrite(9, LOW);
}
void loop() {
  if (mySerial.available()) {
    digitalWrite(9, HIGH);
    mySerial.write(mySerial.read());
  }
}