If a piece of music is in the key of e flat, what's the tonic?

The tonic is the first letter of the key meaning the tonic E Flat.

The tonic will be the E flat

Generally spontaneous human combustion is something that still bewilders some, human combustion happens very rarely and doesn't affect the surrounding areas, so unless you want to set your self on fire, human combustion will remain spontaneous and very rare.

Sure, i'm interested.the answer is yes.