Lively, energetic music by Sting from Brasilia, the capital city in Brazil (3,4)
I believe the answer is:
con brio
'lively energetic music by' is the definition.
I can't tell whether this defines the answer.
'sting from brasilia the capital city in brazil' is the wordplay.
'sting' becomes 'con' (synonyms).
'from' is a charade indicator (letters next to each other).
'the capital' indicates taking the first letters.
'city in brazil' becomes 'Rio' (Rio de Janeiro).
The initial letter of 'brasilia' is 'b'.
'con'+'b'+'rio'='CON BRIO'
Can you help me to learn more?
(Other definitions for con brio that I've seen before include "Lively, musically speaking" , "(In music) with vigour" , "Musically, with zest and animation" , "Musically, with spirit" , "vivaciously" .)