#define pz_pin 10
#define  n 7
#define V 5
#define time 300
int mas_f [n] = {261,293,329,349,392,440,493};
void setup() {
      pinMode(pz_pin, OUTPUT);
      for (int i = 0; i < n; i++) {
        pinMode(i+3, OUTPUT);
      }
    }
    
    void loop() {
      
      for (int i = 0; i < n; i++)
      {
        tone (pz_pin, mas_f[i]*V, time);
        digitalWrite(i+3, HIGH);
        delay(time);
        digitalWrite(i+3, LOW);
      }
      }