Inventor from South, heard in falsetto (5)

I believe the answer is:

tesla

I'm a little stuck... Click here to teach me more about this clue!

'inventor' is the definition.
(I've seen this before)

'south heard in falsetto' is the wordplay.
'TESLA' is hidden back-to-front in amongst the letters.
But, I'm uncertain how the hidden word is indicated.

'from' is the link.

Can you help me to learn more?

(Other definitions for tesla that I've seen before include "Inventive sort" , "Nikola ---, electricity pioneer" , "electrical unit" , "Californian company specialising in electric cars" , "American scientist" .)

I've seen this clue in The Hindu.

Want a hint initially instead of a full solution? Install my app