Can I sign you a song?

During our morning routine, somewhere inbetween breakfast and me actually getting into the shower, Jace took a major spill. I didn't actually see what happened but he cried harder and longer than usual. I knelt down to hold him and console him. He wasn't settling down right away. Jack was watching what was going on and came up to Jace (while Jace was lying on my chest) and put his cheek next to Jace's cheek and said, "I will sing you a song, Jace." He then began singing...... the ABC's!! It was so precious, yet so funny! I couldn't stop laughing! Jack is so sweet to Jace most of the time!!!