A cappella Publisher Desc.  The traditional folk song is offered in a sweet, a cappella harmonization for a variety of voicings. It features a modern variation on the traditional lyrics that offers a gentle call to an idyllic past, which recedes into the distance, across the river of time. The seven variations range from easy (2-part, SA, TB), to medium (SATB, SAB), to advanced (SSAA, TTBB).