Input (grade 13): Other leading baritones who have sung the role of Billy Budd include Sir Thomas Allen, Simon Keenlyside, Richard Stilwell, Nathan Gunn, Rod Gilfry, Bo Skovhus, Thomas Hampson, and Teddy Tahu Rhodes.
Output (grade 9): Famous baritones who have sung the role of Billy Budd include Thomas Allen, Simon Keenlyside, Richard Stilwell, and Thomas Hampson.