class Track
{
    public String Name { get; set; }
    public Double Duration;
    public Boolean IsRemix;

    public override string ToString()
    {
        if (IsRemix) return Name + "(Remix) " + Duration;
        return Name + " " + Duration;
    }
}

class Album :List<Track>
    {
        public Album SortByAlphabet()
        {
            return new Album().OrderBy(x=>x.Name);
        }
    }

class Album :List<Track>
{
    public Album SortByAlphabet()
    {
        return this.OrderBy(x=>x.Name).ToList();
    }
}