Scaffolding with Entity Framework in ASP.NET MVC 4

I'm following along with "Professional ASP.NET MVC 4" and trying to generate a controller from a model using Entity Framework. My Model looks like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;

namespace MvcMusicStore.Models
{
    public class MusicStoreModels
    {
        public class Album
        {
            public virtual int AlbumId { get; set; }
            public virtual int GenreId { get; set; }
            public virtual int ArtistId { get; set; }
            public virtual string Title { get; set; }
            public virtual decimal Price { get; set; }
            public virtual string AlbumArtUrl { get; set; }
            public virtual Genre Genre { get; set; }
            public virtual Artist Artist { get; set; }
        }

        public class Artist
        {
            public virtual int ArtistId { get; set; }
            public virtual string Name { get; set; }
        }

        public class Genre
        {
            public virtual int GenreId { get; set; }
            public virtual string Name { get; set; }
            public virtual string Description { get; set; }
            public virtual List<Album> Albums { get; set; }
        }
    }
}

When I right click my Controllers folder and choose Add > Controller I select "MVC controller with read/write action and views, using Entity Framework" as my template and "Album (MvcMusicStore.Models)" as my Model class. The book tells me to select "new data context..." and name it "MvcMusicStore.Models.MusicStoreDBContext".

Everything looks OK and I have saved and built my solution prior to performing the above actions. However, I get an error message saying

There was an error generating 'MvcMusicStore.Models.MusicStoreDBContext'.
Try rebuilding your project.'

I'm at a bit of a loss. Can anyone help?