Final song by Swedish group in big stadium (5)
I believe the answer is:
gabba
'big stadium' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'final song by swedish group' is the wordplay.
'final' says to take the final letters.
'by' is a charade indicator (letters next to each other).
'swedish group' becomes 'abba' (Swedish band).
The last letter of 'song' is 'g'.
'g'+'abba'='GABBA'
'in' acts as a link.
Can you help me to learn more?
(Another definition for gabba that I've seen is " cricket ground".)