Vibraphone - Digital Download SKU: S9.Q21322 Composed by Peter Wittrich. This edition: Sheet music. Downloadable. Duration 7' 20. Schott Music - Digital #Q21322. Published by Schott Music - Digital (S9.Q21322). In Prayer on the Hills Peter Wittrich musically portrays the atmosphere of tranquility and vastness of a mountain landscape. The highly religious undertone is, only by way of exception, interrupted effectively by noise-like figures.