Look and Read: Dark Towers (Episode 3 - The Old Legend)

Come with me, yes come with me,
To Dark Towers.
Who can tell what we shall see
In Dark Towers?
Dust and cobwebs everywhere,
Footsteps on the winding stair,
Mystery is in the air,
In Dark Towers.
In the garden, in the hall,
Through the arch behind the wall,
Come and listen to the call
Of Dark Towers.
The educational segment features the songs:
I'm ghastly, I'm ghostly, I'm ghoulish,
You may think our spelling's absurd.
But I'm ghastly, I'm ghostly, I'm ghoulish.
And our aitches are seen but never heard.
When you have 'g' and 'h' at the start of a word,
Then the 'h' must be seen, but never heard.
AND
Something to read; that's what I need.
What's this about? Let's find out.