Vinu ji how are you doing . You are on leave today so you must be having a fantastic time.
Yes Sri Krishna was singing during the battle. But the verses of the Gita when sung sounds most lovely. I heard a Swamiji Damodara from RKM sing it when I was young.
Sri Krishna told Arjuna that these people have already been killed by me, but you go ahead and gain the glory.
The Bhagavat Gita is quite close to the Uddhava Gita.
Sri Krishna had a lot of charm and poise and it was very easy to love him when anyone saw him.
Sri Krishna did not object to take up a lowly position of being Arjuna's charioteer and Arjuna hated having to place his foot on Sri Krishna head in order to guide the chariot;; the heavy boots cut Sri Krishna's forehead and it bled. End of each day after the fight, Arjuna used to be very remorseful.