It can be grand in the end (6)
I believe the answer is:
finale
This clue is a double definition.
'it can be grand' is the first definition.
(I've seen this in another clue)
'the end' is the second definition.
(finale is the end of a show)
'in' acts as a link.
(Other definitions for finale that I've seen before include "Final section of a musical composition" , "Last item of event" , "Conclusion, end" , "Climax, end" , "Conclusion of a piece of music" .)