Passionate office into music, for example (6)
I believe the answer is:
ardent
'passionate' is the definition.
(similar in meaning)
'office into music for example' is the wordplay.
'office' becomes 'den' (I've seen this before).
'into' is an insertion indicator.
'music for example' becomes 'art' (music is a kind of art).
'den' going into 'art' is 'ARDENT'.
(Other definitions for ardent that I've seen before include "Burning with emotion" , "Ranted, being passionate" , "Fervid" , "Intensely devoted" , "Passionate, fervent" .)