It's funny that you reblogged that lullaby post! I'm Jewish and I was sang to with that lullaby too! It's called Numi Numi (traditionally for a little girl but Avi changed the lyrics to a boy!) The part that Dan sang was "sleep sleep my little boy. Sleep sleep. Sleep sleep my little one" The lullaby is actually pretty long though.
Wow, that’s really cool! Thanks for sharing the meaning, I was wondering about that. It’s really interesting to hear more about the background of the song. I wonder if it’s a really common lullaby for Jewish families or if it has its roots more in Israel...