sei pada - that verse; punaḥ punaḥ - again and again; karāya gāyana - made to sing; punaḥ punaḥ - again and again; āsvādaye - tastes; karena nartana - dances.

Lord Caitanya Mahāprabhu had Svarūpa Dāmodara sing the same verse again and again. Each time he sang it, the Lord tasted it anew, and thus He danced again and again.