diff --git a/src/main/kotlin/controller/api/PlaylistApiController.kt b/src/main/kotlin/controller/api/PlaylistApiController.kt
index 4c5dc9f..878eb78 100644
--- a/src/main/kotlin/controller/api/PlaylistApiController.kt
+++ b/src/main/kotlin/controller/api/PlaylistApiController.kt
@@ -62,7 +62,6 @@
         @PathVariable("slug") slug: String,
         @Valid @RequestBody request: PlaylistAudioRequest
     ): ResponseEntity<Void> {
-        log.info("recieve: {}", request)
         playlistService.updatePlaylistAudioList(slug, request)
         return ResponseEntity.ok(null)
     }
diff --git a/src/main/kotlin/entity/Entity.kt b/src/main/kotlin/entity/Entity.kt
index 28836cf..ce6e7dc 100644
--- a/src/main/kotlin/entity/Entity.kt
+++ b/src/main/kotlin/entity/Entity.kt
@@ -103,7 +103,7 @@
 
 @Table("playlist_audio")
 data class PlaylistAudioEntity(
-    @property:Column("id", insertable = false, updatable = false)
+    @property:Column("id", updatable = false)
     var id: Long = 0L,
     @property:Column("playlist_id")
     var playlistId: Long = 0L,
diff --git a/src/main/kotlin/service/PlaylistService.kt b/src/main/kotlin/service/PlaylistService.kt
index 951945e..ce5ef04 100644
--- a/src/main/kotlin/service/PlaylistService.kt
+++ b/src/main/kotlin/service/PlaylistService.kt
@@ -99,41 +99,26 @@
     ) {
         playlistDao.findOneBySlug(slug)
             ?.let { playlist ->
+                val oldPlaylistAudioList = playlist.playlistAudio
+                if (oldPlaylistAudioList.isNotEmpty()) {
+                    playlistAudioDao.deleteAllByIds(playlist.playlistAudio
+                        .map { it.id }
+                        .toList())
+                }
                 val audioList = findAllByOrderedSlugs(request.audioSlugs)
                 if (request.audioSlugs.size != audioList.size) {
                     throw BadRequestException()
                 }
-                val registeredAudioIds = playlist.playlistAudio.map { it.audioId }.toSet()
-                val requestAudioIds = audioList.map { it.id }.toSet()
-                val playlistSize = playlist.playlistAudio?.size ?: 0
-
-                // delete
-                val deleteIds = playlist.playlistAudio
-                    .filter { !requestAudioIds.contains(it.audioId) }
-                    .map { it.id }
-                    .toList()
-                if (deleteIds.isNotEmpty()) {
-                    playlistAudioDao.deleteAllByIds(
-                        playlist.playlistAudio
-                            .filter { !requestAudioIds.contains(it.audioId) }
-                            .map { it.id }
-                            .toList()
-                    )
-                }
-                audioList.forEachIndexed { idx, audio ->
-                    if (registeredAudioIds.contains(audio.id)) {
-                        // ignore
-                        return@forEachIndexed
+                audioList.forEachIndexed { index, audio ->
+                    val a = if (index < oldPlaylistAudioList.count()) {
+                        oldPlaylistAudioList[index]
+                    } else {
+                        PlaylistAudioEntity()
                     }
-                    // add
-                    playlistAudioDao.insertOne(
-                        PlaylistAudioEntity(
-                            id = if (idx >= playlistSize) 0L else playlist?.playlistAudio!![idx].id,
-                            playlistId = playlist.id,
-                            sequence = idx,
-                            audioId = audio.id
-                        )
-                    )
+                    a.playlistId = playlist.id
+                    a.sequence = index
+                    a.audioId = audio.id
+                    playlistAudioDao.insertOne(a)
                 }
             } ?: throw NotFoundException()
     }