Merry Christmas Friends!

MerryChristmasFriends.cs

public void string SingChristmasCarol()
{
  var carolBuilder = new StringBuilder();
 
  carolBuilder.AppendLine("Tis the season to be jolly!");
  carolBuilder.AppendLine(SingChorus());
  carolBuilder.AppendLine("Deck the halls with boughs of holly!");
  carolBuilder.AppendLine(SingChorus());
  carolBuilder.AppendLine("Don we now our gay apparel!");
  carolBuilder.AppendLine(SingChorus());
  carolBuilder.AppendLine("Hark the heralds yuletide carol!");
  carolBuilder.AppendLine(SingChorus());
 
  return carolBuilder.ToString();
}
 
public void string SingChorus()
{
  var chorusBuilder = new StringBuilder("Fa");
 
  for (int i = 0; i < 9; i++)
  {
    chorusBuilder.Append(" la");
  }
 
  chorusBuilder.Append('!');
  return chorusBuilder.ToString();
}