20 singers | 2 rows
Drag and drop singers to swap positions, click two seats to swap them, or double-click a singer to edit name, height, or voice part.
Height warning: Some singers are taller than the person directly behind them. Their seats are highlighted in orange.
Drag parts left/right to set column order. Add a row group to stack parts front-to-back — top group stands in back, bottom group in front.
Singers will be scattered so no two adjacent seats share a voice part. Column proportions are set automatically.