Lecture about culmination of German Baroque (6)

I believe the answer is:
ornate
'baroque' is the definition.
(I've seen this before)
'lecture about culmination of german' is the wordplay.
'lecture' becomes 'orate' (I've seen this in another clue).
'about' means one lot of letters goes inside another.
'culmination of german' becomes 'n' (I can't justify this - if you can you should give a lot more credence to this answer).
'orate' going around 'n' is 'ORNATE'.
Can you help me to learn more?
(Other definitions for ornate that I've seen before include "Elaborately decorated, perhaps overdone" , "Lavishly decorated" , "Richly decorated, perhaps too much so" , "Rococo" , "Heavily decorated" .)
