As a member of Das Trio, I got to sing the bass part of Bridge Over Troubled Waters (words & music: Paul Simon) in an SAB arrangement by Robert Sund which can be found in Chor aktuell junior sometime in 2007.
This arrangement published by Gustav Bosse Verlag does not include the third verse Sail on, silver girl. Sail on by ..... and the bass part joins in the fun leading the second verse with some nice back-and-forth between the upper and lower voices. Really quite enjoyable!

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There is a choral SATB arrangement of Bridge Over Troubled Waters by Siegfried Macht in Chor Liederbuch published by Scott Publications

Lyrics