John Rutter's I Wonder As I Wander for solo voice and SATB choir unaccompanied. A familiar piece from the 100 Carols for Choirs stable John Rutter's sublime arrangement of the haunting Appalachian carol I Wonder As I Wander collected in the 1930s by musical folklorist and singer John Jacob Niles is lilting and evocative setting the scene with an affecting opening verse for solo voice.