I started off with "Rozhenkes mit Mandeln" too -- the text in my mother's handwriting that she learned it from while in the hospital to have me is in my baby book. Also Brahms's lullaby, "Guten Abend, gute Nacht". There were two songs that compared sleep to a sea voyage: "Blanket Bay" ("There's a ship sails away") & "Sail, Baby, Sail" ("Baby's boat the silver moon"). The latter is in the Pankakes' book. In the former, when my mother sang the line "So you can't see his little bare feet", I would perversely scramble to get my feet out from under the covers.