Krishna to Rama

Tulsidas once went to Brindavan. He visited a temple. He saw the image of Lord Krishna. He said, "How shall I describe Thy beauty, O Lord! But Tulsi will bow his head only when You take up bow and arrow in Your hands". The Lord revealed Himself before Tulsidas in the form of Lord Rama with bow and arrows

Song Composed

'krishn gitavali' men kul 61 pad hain, jo nimn prakar se vyavasthit hain-

1. balalila - 20 pad
2. roop-saundary - 3 pad
3. virah - 9 pad
4. uddhav-gopika-snvad ya 'bhramaragit' - 27 pad
5. draupadi-lajja-rakshan - 2 pad

https://www.youtube.com/results?search_query=krishna+gitavali
http://www.slideshare.net/search/slideshow?searchfrom=header&q=krishna+gitavali

Also
https://en.wikipedia.org/wiki/Krishnacharitmanas
https://www.youtube.com/results?q=Krishna+Charit+Manas
http://www.slideshare.net/search/slideshow?searchfrom=header&q=Krishna+Charit+Manas