Here is a class on the Caitanya Caritamrita, Adi Lila, Chapter 4, verses 142-145, given by H.H. Kadamba Kanana Swami together with H.H. Kavichandra Swami in Berlin, Germany, on the most auspicious day of Radhastami (05.09.2011).
The lecture nicely explains the beautiful exchanges between Radha and Krishna and Their appearance as Caitanya Mahaprabhu as well as the significance of Gaura-Gadadhara.
If you want to download the lecture, please click here!