How to write songs like the Beatles

Trolls, Trolls, Trolls, Trolls, Trolls, Trolls, Trolls, Trolls, Trolls.
There’s no one you can troll that can’t be trolled.
Nothing you can evoke that can’t be evoked.
[...]
All you need is Trolls, all you need is Trolls,
All you need is Trolls, Trolls, Trolls is all you need.
All you need is Trolls (all together now)
All you need is Trolls (everybody)
All you need is Trolls, Trolls, Trolls is all you need.

I think they mean “How to right a song like a 2008-2012 pop artist”