Good old man embracing modern music? That's the spirit! (6)
I believe the answer is:
grappa
'the spirit' is the definition.
(I've seen this before)
'good old man embracing modern music?' is the wordplay.
'good' becomes 'g' (abbreviation).
'old man' becomes 'pa' (both can mean father).
'embracing' is an insertion indicator.
'modern music?' becomes 'rap' (I've seen this in other clues).
'g'+'pa'='gpa'
'gpa' going around 'rap' is 'GRAPPA'.
'that's' acts as a link.
(Other definitions for grappa that I've seen before include "Spirit distilled from fermented grape remains" , "Italian drink" , "Form of brandy" , "Italian spirit made from grape residue after pressing" , "Spirit distilled from grapes" .)