One of the things that 'WandaVision' has really nailed its observance of sitcom music standards.

Each episode has its own unique theme song that fits the era. The earlier ones, for example, were jazz and samba-infused, while the '70s and '80s borrowed from the likes of 'Family Ties'. However, last week's episode ended with something pretty unique - a throwback to something like 'The Munsters' and 'The Addams Family' when Agnes the nosy neighbour was revealed as Agatha Harkness.

Of course, we've got some theories on who / what Agatha Harkness is, but in the meantime, the track in question - 'Agatha All Along' - is now available on Spotify for your aural pleasure. All of the songs and lyrics for the show were written and performed by Kristen Anderson-Lopez and Robert Lopez, who just so happen to be the songwriting duo behind 'Let It Go' from 'Frozen'.

So, uh, yeah, they know how to write a catchy tune. Even if it is about being an evil woman who laughs about killing dogs. Still a catchy tune.

Have a listen. We'll have a recap / review of this week's episode on Friday.