Pioneer on satellite broadcast mangles intro when introducing queen (4,9)
I believe the answer is:
neil armstrong
'introducing queen' is the definition.
I know nothing about this answer so I can't judge whether this works.
'pioneer on satellite broadcast mangles intro' is the wordplay.
'pioneer' becomes 'armstrong' (I've seen this before).
'on' means one lot of letters go next to another.
'satellite broadcast mangles intro' becomes 'neil' (I can't explain this - if you can you should believe this answer much more).
'armstrong' after 'neil' is 'NEIL ARMSTRONG'.
'when' is the link.
Can you help me to learn more?
(Other definitions for neil armstrong that I've seen before include "First moonwalker" , "1969 moon walker" , "First man on the moon" .)