Piano - script for MetaTrader 5

Listen to the rhythm of your candlesticks

This script plays Piano keys A B C and D wav files based on candlestick properties. Higher green plays higher notes while falling bears plays lower note

Sounds wav files should be placed inside Files/Sounds Folder

Copy this code and paste a new script. If you download the file"uncomment the lines" where its written and compile

//+------------------------------------------------------------------+
//|                                                        Piano.mq5 |
//|                                Copyright 2025, Rajesh Kumar Nait |
//|                  https://www.mql5.com/en/users/rajeshnait/seller |
//+------------------------------------------------------------------+
#property copyright "Copyright 2025, Rajesh Kumar Nait"
#property link      "https://www.mql5.com/en/users/rajeshnait/seller"
#property version   "1.00"

#property strict
#property script_show_inputs

// Inputs you can set
input int BarsToPlay = 20;       // How many bars to play music
input double NoteDelay = 0.5;     // Seconds between notes (tempo)

#resource "\\Files\\Sounds\\A.wav"
#resource "\\Files\\Sounds\\B.wav"
#resource "\\Files\\Sounds\\C.wav"
#resource "\\Files\\Sounds\\D.wav"

// Notes array (only 4 notes: A, B, C, D)
string notes[] = {"A", "B", "C", "D"};

//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart() {
//---
   int note_index = 0;  // Starting note
   int total_bars = BarsToPlay;

   if (total_bars <= 0) {
      Print("Invalid BarsToPlay. It must be > 0.");
      return;
   }

   datetime last_bar_time = iTime(NULL, PERIOD_CURRENT, 0);

   // Go from (BarsToPlay) bars ago up to bar 1 (newest closed candle)
   for (int i = total_bars; i >= 1; i--) {
      // Get candle data
      double open  = iOpen(NULL, PERIOD_CURRENT, i);
      double close = iClose(NULL, PERIOD_CURRENT, i);

      // Determine candle color
      bool isGreen = close > open;
      bool isRed   = close < open;

      // Move note index
      if (isGreen)
         note_index++;
      else if (isRed)
         note_index--;

      // Clamp note_index between 0 and ArraySize(notes) - 1
      if (note_index < 0)
         note_index = 0;
      if (note_index >= ArraySize(notes))
         note_index = ArraySize(notes) - 1;

      // Play the sound
      string play_note = notes[note_index];
      PlaySound("::Files\\Sounds\\"+play_note + ".wav");

      // Wait for the next note
      Sleep((int)(NoteDelay * 1000)); // Convert seconds to milliseconds
   }

   Print("Music finished playing ", total_bars, " bars!");
}
//+------------------------------------------------------------------+