Place the following letters — A, G, H, I, L, M, O, R, T — into every row, column, 3×3 block, and both main diagonals, ensuring that none of them repeat within those structures.

If solved correctly, one of the rows or columns will reveal the name of a French electro‑metal music project. And, following our now‑traditional rule: the correct solver GETS TO LISTEN TO THEIR PRIZE.