diff --git a/.gitignore b/.gitignore
index a697b3b..f3224d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,7 +5,5 @@ partitions/.svelte-kit/
 partitions/build/
 partitions/node_modules/
 partitions/static/pdf.worker.min.js
-partitions/.env
 api/vendor/
 api/composer.phar
-api/.env
diff --git a/api/index.php b/api/index.php
index 2216829..0a49395 100644
--- a/api/index.php
+++ b/api/index.php
@@ -343,6 +343,24 @@ if (preg_match('#^admin/scores/(\d+)$#', $path, $matches) && $method === 'PUT')
     exit;
 }
 
+// PUT /admin/scores/:id/pieces - Update pieces
+if (preg_match('#^admin/scores/(\d+)/pieces$#', $path, $matches) && $method === 'PUT') {
+    $scoreId = $matches[1];
+    $input = json_decode(file_get_contents('php://input'), true);
+    
+    $pieces = $input['pieces'] ?? [];
+    
+    $result = $scanner->updatePieces($scoreId, $pieces);
+    
+    if ($result['success']) {
+        echo json_encode(['success' => true]);
+    } else {
+        http_response_code(400);
+        echo json_encode(['error' => $result['error']]);
+    }
+    exit;
+}
+
 // DELETE /admin/scores/:id - Delete score
 if (preg_match('#^admin/scores/(\d+)$#', $path, $matches) && $method === 'DELETE') {
     $scoreId = $matches[1];
diff --git a/api/lib/ScoreScanner.php b/api/lib/ScoreScanner.php
index 97438c3..2fd01e2 100644
--- a/api/lib/ScoreScanner.php
+++ b/api/lib/ScoreScanner.php
@@ -489,6 +489,47 @@ class ScoreScanner {
         return ['success' => true];
     }
     
+    public function updatePieces(string $scoreId, array $pieces): array {
+        $scoreDir = $this->scoresPath . $scoreId;
+        $iniFile = $scoreDir . '/score.ini';
+        
+        if (!file_exists($iniFile)) {
+            return ['success' => false, 'error' => 'Score not found'];
+        }
+        
+        $ini = @parse_ini_file($iniFile, true);
+        if ($ini === false) {
+            return ['success' => false, 'error' => 'Failed to parse score.ini'];
+        }
+        
+        // Get existing info
+        $name = $ini['info']['name'] ?? '';
+        $compositor = $ini['info']['compositor'] ?? '';
+        $ressource = $ini['info']['ressource'] ?? '';
+        
+        // Rebuild ini content with new pieces
+        $content = "[info]\n";
+        $content .= "name = $name\n";
+        $content .= "compositor = $compositor\n";
+        if ($ressource) {
+            $content .= "ressource = $ressource\n";
+        }
+        $content .= "\n[pieces]\n";
+        $content .= "count = " . count($pieces) . "\n";
+        
+        foreach ($pieces as $piece) {
+            $num = $piece['number'] ?? $piece['id'];
+            $pieceName = $piece['name'] ?? '';
+            $content .= "$num = $pieceName\n";
+        }
+        
+        if (file_put_contents($iniFile, $content) === false) {
+            return ['success' => false, 'error' => 'Failed to write score.ini'];
+        }
+        
+        return ['success' => true];
+    }
+    
     public function deleteScore(string $scoreId): array {
         $scoreDir = $this->scoresPath . $scoreId;
         
diff --git a/partitions/src/lib/api.ts b/partitions/src/lib/api.ts
index a94ff9f..6553133 100644
--- a/partitions/src/lib/api.ts
+++ b/partitions/src/lib/api.ts
@@ -136,6 +136,15 @@ export const apiService = {
 		return response.data;
 	},
 
+	async updatePieces(id: string, pieces: { id: string; name: string }[]): Promise<{ success: boolean; error?: string }> {
+		const formattedPieces = pieces.map((p, i) => ({
+			number: i + 1,
+			name: p.name || `Partie ${i + 1}`
+		}));
+		const response = await api.put(`/admin/scores/${id}/pieces`, { pieces: formattedPieces });
+		return response.data;
+	},
+
 	async deleteScore(id: string): Promise<{ success: boolean; error?: string }> {
 		const response = await api.delete(`/admin/scores/${id}`);
 		return response.data;
diff --git a/partitions/src/routes/admin/[id]/+page.svelte b/partitions/src/routes/admin/[id]/+page.svelte
index 947c37a..cde8f3e 100644
--- a/partitions/src/routes/admin/[id]/+page.svelte
+++ b/partitions/src/routes/admin/[id]/+page.svelte
@@ -61,6 +61,29 @@
 	let uploadWatermark = $state(false);
 	let uploadWatermarkPosition = $state<'left' | 'right'>('left');
 
+	// Edit pieces
+	let editingPieces = $state(false);
+	let piecesEdit = $state<{id: string; name: string}[]>([]);
+	let savingPieces = $state(false);
+
+	async function savePieces() {
+		savingPieces = true;
+		try {
+			const result = await apiService.updatePieces(scoreId, piecesEdit);
+			if (result.success) {
+				selectedScorePieces = [...piecesEdit];
+				editingPieces = false;
+			} else {
+				alert('Erreur: ' + result.error);
+			}
+		} catch (err) {
+			console.error(err);
+			alert('Erreur lors de la sauvegarde');
+		} finally {
+			savingPieces = false;
+		}
+	}
+
 	// Auto-set default key when instrument changes
 	$effect(() => {
 		if (uploadInstrument) {
@@ -375,6 +398,53 @@
 				</div>
 			</div>
 		</div>
+
+		<!-- Parties -->
+		<div class="bg-white rounded-xl shadow-md border border-gray-200 overflow-hidden mb-6">
+			<div class="px-6 py-4 border-b border-gray-200 bg-gray-50 flex items-center justify-between">
+				<h2 class="text-lg font-semibold text-ohmj-primary">Parties ({selectedScorePieceCount})</h2>
+				{#if !editingPieces}
+					<button onclick={() => { piecesEdit = [...selectedScorePieces]; editingPieces = true; }} class="text-ohmj-primary hover:text-ohmj-secondary text-sm font-medium">
+						Modifier
+					</button>
+				{/if}
+			</div>
+			<div class="p-4">
+				{#if editingPieces}
+					<div class="space-y-3">
+						{#each piecesEdit as piece, i}
+							<div class="flex items-center gap-2">
+								<span class="text-sm text-gray-500 w-8">#{i + 1}</span>
+								<input
+									type="text"
+									bind:value={piece.name}
+									class="flex-1 px-3 py-2 border border-gray-300 rounded-md text-sm"
+									placeholder="Nom de la partie"
+								/>
+								<button onclick={() => piecesEdit = piecesEdit.filter((_, idx) => idx !== i)} class="text-red-500 hover:text-red-700 p-2" title="Supprimer">
+									<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"></path></svg>
+								</button>
+							</div>
+						{/each}
+						<button onclick={() => piecesEdit = [...piecesEdit, {id: String(piecesEdit.length + 1), name: ''}]} class="text-ohmj-primary hover:text-ohmj-secondary text-sm font-medium">
+							+ Ajouter une partie
+						</button>
+						<div class="flex gap-2 pt-3 border-t">
+							<button onclick={() => { piecesEdit = [...selectedScorePieces]; editingPieces = false; }} class="px-4 py-2 text-gray-600 hover:text-gray-800 text-sm">Annuler</button>
+							<button onclick={savePieces} disabled={savingPieces} class="px-4 py-2 bg-ohmj-primary text-white rounded hover:bg-ohmj-secondary text-sm disabled:opacity-50">
+								{savingPieces ? 'Enregistrement...' : 'Enregistrer'}
+							</button>
+						</div>
+					</div>
+				{:else}
+					<div class="flex flex-wrap gap-2">
+						{#each selectedScorePieces as piece}
+							<span class="px-3 py-1 bg-gray-100 rounded-full text-sm">{piece.name || `Partie ${piece.id}`}</span>
+						{/each}
+					</div>
+				{/if}
+			</div>
+		</div>
 	</div>
 
 	{#if error}