Produce variation on a theme Antonin Dvorak starts? Stupid (8)

I believe the answer is:

meathead

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

'produce variation' is the definition.
The definition suggests a singular noun which matches the answer.

'a theme antonin dvorak starts? stupid' is the wordplay.
'starts?' indicates taking the first letters (I've seen 'started' mean this).
'stupid' indicates an anagram (in a stupid order).
The initial letters of 'antonin dvorak' is 'ad'.
'a'+'theme'+'ad'='athemead'
'athemead' is an anagram of 'MEATHEAD'.

'on' is the link.

Can you help me to learn more?

(Other definitions for meathead that I've seen before include "Fool" , "One without good judgment" , "sap" , "Idiot" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.