Allison, in your _Sacred Harp_ (1991 Denson edition), try 284 Garden Hymn, a tune from Ananias Davisson's _Supplement to the Kentucky Harmony_ of 1826. Moira Smiley's two-part version uses the tenor (tune) and treble lines -- and sounds beautiful. You can hear a number of recordings from Sacred Harp conventions at bostonsing.org, and the Denson book is indexed word by word and by title at fasola.org. Both this tune and 64 Nashville set the same hymn from an 1803 collection, and as you note, Smiley has altered the words considerably.