In Cats What Is the Heaviside Layer?

The Heaviside Layer is a setting referenced throughout the musical, usually interpreted to be a heaven-like place of rebirth for cats selected by Old Deuteronomy. Being selected to go to the Heaviside Layer is a huge honour, with hopefuls apparently vying for a spot each year.

What happens to cats in the Heaviside Layer?

In the context of Cats, the Heaviside Layer is essentially Heaven, or the next step of existence that leads to reincarnation. It's where the chosen Jellicle cat is sent before they can become the cat they have always wanted to be reborn into.

What happens to Grizabella in cats?

Grizabella is at last forgiven and accepted by everyone. She is then chosen by Old Deuteronomy to be reborn, ascending up to the Heaviside Layer to "come back to a different Jellicle life". The role requires a wide vocal range (G3-Eb5).