diff --git a/README.md b/README.md
index 751c8e8..63dbee2 100644
--- a/README.md
+++ b/README.md
@@ -98,6 +98,9 @@ Setting iTunes-style metadata tags
   --encodedBy    (string)     Set the name of the Person/company who encoded the file
   --apID         (string)     Set the Account Name
   --cnID         (number)     Set the iTunes Catalog ID (see --longhelp)
+  --atID         (number)     Set the iTunes Artist ID (see --longhelp)
+  --plID         (number)     Set the iTunes Playlist ID (see --longhelp)
+  --cmID         (number)     Set the iTunes Composer ID (see --longhelp)
   --geID         (number)     Set the iTunes Genre ID (see --longhelp)
   --xID          (string)     Set the vendor-supplied iTunes xID (see --longhelp)
   --gapless      (boolean)    Set the gapless playback flag
diff --git a/src/main.cpp b/src/main.cpp
index 6ef3d05..7eb755e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -83,6 +83,9 @@
 #define Meta_apID 'Y'
 #define Meta_cnID 0xC0
 #define Meta_geID 0xC2
+#define Meta_atID 0xCC
+#define Meta_plID 0xCD
+#define Meta_cmID 0xCE
 #define Meta_xID 0xC3
 #define Meta_storedescription 0xC4
 #define Meta_EncodingTool 0xB7
@@ -217,6 +220,9 @@ static const char *shortHelp_text =
     "encoded the file\n"
     "  --apID         (string)     Set the Account Name\n"
     "  --cnID         (number)     Set the iTunes Catalog ID (see --longhelp)\n"
+    "  --atID         (number)     Set the iTunes Artist ID (see --longhelp)\n"
+    "  --plID         (number)     Set the iTunes Playlist ID (see --longhelp)\n"
+    "  --cmID         (number)     Set the iTunes Composer ID (see --longhelp)\n"
     "  --geID         (number)     Set the iTunes Genre ID (see --longhelp)\n"
     "  --xID          (string)     Set the vendor-supplied iTunes xID (see "
     "--longhelp)\n"
@@ -396,6 +402,9 @@ static const char *longHelp_text =
     "                                      Alternatively you can use iMDB "
     "numbers, however these will not match the iTunes catalog.\n"
     "\n"
+    "  --atID             ,       (num)    Set iTunes Artist ID.\n"
+    "  --plID             ,       (num)    Set iTunes Playlist.\n"
+    "  --cmID             ,       (num)    Set iTunes Composer ID.\n"
     "  --geID             ,       (num)    Set iTunes Genre ID.  This does not "
     "necessarily have to match genre.\n"
     "                                      See --genre-movie-id-list and "
@@ -1536,6 +1545,9 @@ int real_main(int argc, char *argv[]) {
       {"encodedBy", required_argument, NULL, Meta_EncodedBy},
       {"apID", required_argument, NULL, Meta_apID},
       {"cnID", required_argument, NULL, Meta_cnID},
+      {"atID", required_argument, NULL, Meta_atID},
+      {"plID", required_argument, NULL, Meta_plID},
+      {"cmID", required_argument, NULL, Meta_cmID},
       {"geID", required_argument, NULL, Meta_geID},
       {"xID", required_argument, NULL, Meta_xID},
       {"gapless", required_argument, NULL, Meta_PlayGapless},
@@ -2480,6 +2492,66 @@ int real_main(int argc, char *argv[]) {
       break;
     }
 
+    case Meta_atID: { // the iTunes Artist ID
+      APar_ScanAtoms(ISObasemediafile);
+      if (!APar_assert(
+              metadata_style == ITUNES_STYLE, 1, "iTunes Artist ID")) {
+        break;
+      }
+
+      uint32_t data_value = 0;
+      sscanf(optarg, "%" SCNu32, &data_value);
+
+      AtomicInfo *atIDData_atom = APar_MetaData_atom_Init(
+          "moov.udta.meta.ilst.atID.data", optarg, AtomFlags_Data_UInt);
+      APar_Unified_atom_Put(atIDData_atom,
+                            NULL,
+                            0,
+                            data_value,
+                            32);
+      break;
+    }
+
+    case Meta_plID: { // the iTunes Playlist ID
+      APar_ScanAtoms(ISObasemediafile);
+      if (!APar_assert(
+              metadata_style == ITUNES_STYLE, 1, "iTunes Playlist ID")) {
+        break;
+      }
+
+      uint32_t data_value = 0;
+      sscanf(optarg, "%" SCNu32, &data_value);
+
+      AtomicInfo *plIDData_atom = APar_MetaData_atom_Init(
+          "moov.udta.meta.ilst.plID.data", optarg, AtomFlags_Data_UInt);
+      APar_Unified_atom_Put(plIDData_atom,
+                            NULL,
+                            0,
+                            data_value,
+                            64);
+      break;
+    }
+
+    case Meta_cmID: { // the iTunes Composer ID
+      APar_ScanAtoms(ISObasemediafile);
+      if (!APar_assert(
+              metadata_style == ITUNES_STYLE, 1, "iTunes Composer ID")) {
+        break;
+      }
+
+      uint32_t data_value = 0;
+      sscanf(optarg, "%" SCNu32, &data_value);
+
+      AtomicInfo *cmIDData_atom = APar_MetaData_atom_Init(
+          "moov.udta.meta.ilst.cmID.data", optarg, AtomFlags_Data_UInt);
+      APar_Unified_atom_Put(cmIDData_atom,
+                            NULL,
+                            0,
+                            data_value,
+                            32);
+      break;
+    }
+
     case Meta_geID: { // the iTunes Genre ID
       APar_ScanAtoms(ISObasemediafile);
       if (!APar_assert(metadata_style == ITUNES_STYLE, 1, "iTunes Genre ID")) {
diff --git a/src/parsley.cpp b/src/parsley.cpp
index 25dc96a..5680069 100644
--- a/src/parsley.cpp
+++ b/src/parsley.cpp
@@ -2545,6 +2545,26 @@ void APar_Unified_atom_Put(AtomicInfo *target_atom,
     break;
   }
 
+  case 64: { // somehow used for plID, but not cnID
+    target_atom->AtomicData[atom_data_pos] =
+        (ancillary_data & 0xff00000000000000) >> 24;
+    target_atom->AtomicData[atom_data_pos + 1] =
+        (ancillary_data & 0xff000000000000) >> 16;
+    target_atom->AtomicData[atom_data_pos + 2] =
+        (ancillary_data & 0xff0000000000) >> 8;
+    target_atom->AtomicData[atom_data_pos + 3] =
+        (ancillary_data & 0xff00000000) << 0;
+    target_atom->AtomicData[atom_data_pos + 4] =
+        (ancillary_data & 0xff000000) >> 24;
+    target_atom->AtomicData[atom_data_pos + 5] =
+        (ancillary_data & 0xff0000) >> 16;
+    target_atom->AtomicData[atom_data_pos + 6] = (ancillary_data & 0xff00) >> 8;
+    target_atom->AtomicData[atom_data_pos + 7] = (ancillary_data & 0xff) >> 0;
+    target_atom->AtomicLength += 8;
+    atom_data_pos += 8;
+    break;
+  }
+
   default: {
     break;
   }