use your MP3 player on your 770 keyboard.
download the MP3 from that YouTube video. Then take the MP3 file to your keyboard.
Next you will LOOP a small section of the song out .. maybe 10 seconds of the track at a time. play along with the track searching for the notes (use your ears). Write down the notes. I use a NUMBERING system instead of notes, much easier to log it all down.
This is what I do to figure out a song's intro and signature licks that I hear in a song.
Regards
Drake