Now we have a board version, printed on light, crisp whiteboard and slightly reduced for child-sized hands.

Yet it contains every word of the original, which is much-loved by grandparents and parents everywhere.

A young mother holds her baby, and while she sings to it she rocks it back and forth.

And through her life, and the stages of his life, she holds her son and rocks him back and forth as she tells him that she will love him forever.