[VIDEO] Sweet Big Brother Sings Adorable Lullaby To New Baby Brother

This just melts my heart. Watch this video-it's the sweetest thing ever!  Big brother, Grayson, is welcoming his new baby brother by singing  an adorable lullaby. Mom was lucky enough to catch this precious moment on video. It's so sweet to see the love siblings can share. Little do they know they'll be best friends for life.