Awwwww! I had to hum everything at first, too! And I am a horrible
singer. (never thought I was that bad until dh made a comment before we were married
Anyhoo, we do Clementine, Golden Slumbers, Twinkle, Twinkle (which has a ton of verses), Braham's Lullaby, Fais Do-Do (french one), Rock-a-Bye Baby, My Bonnie Lies Over the Ocean (probably not a lullaby, but whatever works), You are My Sunshine...and right now my ds's favorite of all that I have to sing at least three times before nap and
bed time is Sinead O'Connor's "My Darling Child". I never get tired of that one.
Whenever I don't know the words, I fake them until I can get to the computer. Just "google" the title and lots of choices will come up. I copy and paste them into a Word document to refer to later, until I have them memorized. I'm a geek, I know
, but we sing a LOT around here!