(Rock a bye boogie rock a bye rock a bye boogie rock a bye Rock a bye boogie rock a bye) Rock a bye boogie it's late to sleep rock your baby to sleep Rock a bye boogie it's guaranteed for which your baby sleep Well it don't mean a thing unless you sing rock a bye boogie with a beat Rock a bye boogie... [ strings ] Rock a bye baby rock a bye baby sleep in a big tree top When the wind begins to blow baby's gonna rock'n rock When about the rain is fallin' baby's gonna blow his top Rock a bye boogie... [ piano ] Mary had a little lamb as sweet as white as snow And early when Mary went the lamb had sure to go Come on baby and go to sleep and onto dreamland go Rock a bye boogie...