Music - first steps

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace NotesPopcorn
{
    class Program
    {
        static void Main(string[] args)
        {
            decimal noteC=130.81m;
            decimal noteDb = 138.59m;
            decimal noteD = 146.83m;
            decimal noteEb = 155.56m;
            decimal noteE = 164.81m;
            decimal noteF = 174.61m;
            decimal noteGb = 175.00m;
            decimal noteG = 196.00m;
            decimal noteAb = 207.65m;
            decimal noteA = 220.00m;
            decimal noteBb = 233.08m;
            decimal noteB = 246.94m;

            string popcornsNotes = "AGAECEAAGAECEAABCBCCADADDGAAGAAGAECEAAGAECEAABCBCCADADDGAAGABCEDECACGEDECACGEGbGGbEE";
            for (int i = 0; i < popcornsNotes.Length; i++)
            {
                switch (popcornsNotes[i])
                {
                    case 'A': Console.Beep((int)noteA, 500); break;
                    case 'B': Console.Beep((int)noteB, 500); break;
                    case 'C': Console.Beep((int)noteC, 500); break;
                    case 'D': Console.Beep((int)noteD, 500); break;
                    case 'E': Console.Beep((int)noteE, 500); break;
                    case 'F': Console.Beep((int)noteF, 500); break;
                    case 'G': Console.Beep((int)noteG, 500); break;
                    default:
                        break;
                }
            }
            
        }
    }
}