Smash hit podcast on radio originally — completely timeless and joyful (9)
I believe the answer is:
rhapsodic
'joyful' is the definition.
(rhapsody is intense joy)
'smash hit podcast on radio originally completely timeless' is the wordplay.
I cannot quite see how this works, but
'completely' could be 'so' (both can mean 'very much') and 'so' is found within the answer.
This explanation may well be incorrect...
'and' acts as a link.
Can you help me to learn more?
(Other definitions for rhapsodic that I've seen before include "Expressing delight" , "Ecstatic, extravagantly enthusiastic" , "Wildly emotional" , "Like an irregular and emotional composition" , "Expressing ecstatic feeling" .)