CREATE TABLE table_28482 ("Week #" TEXT, "Theme" TEXT, "Song choice" TEXT, "Original artist" TEXT, "Order #" TEXT, "Result" TEXT)

who is the original artist for the song ' rhiannon '?
SELECT "Original artist" FROM table_28482 WHERE "Song choice" = ' Rhiannon '
SELECT "Original artist" FROM "table_28482" WHERE "Song choice" = ' Rhiannon '