diff --git a/doomsday/apps/libdoomsday/include/doomsday/defs/definition.h b/doomsday/apps/libdoomsday/include/doomsday/defs/definition.h
index 6f2fa4bca1..58b218ba1c 100644
--- a/doomsday/apps/libdoomsday/include/doomsday/defs/definition.h
+++ b/doomsday/apps/libdoomsday/include/doomsday/defs/definition.h
@@ -47,6 +47,8 @@ class LIBDOOMSDAY_PUBLIC Definition : public de::RecordAccessor
      */
     operator bool() const;
 
+    de::String id() const;
+
     /**
      * Returns the ordinal of the definition. Ordinals are automatically set by
      * DEDRegister as definitions are created.
diff --git a/doomsday/apps/libdoomsday/src/defs/definition.cpp b/doomsday/apps/libdoomsday/src/defs/definition.cpp
index 4dacc01160..307b1a0aef 100644
--- a/doomsday/apps/libdoomsday/src/defs/definition.cpp
+++ b/doomsday/apps/libdoomsday/src/defs/definition.cpp
@@ -40,6 +40,12 @@ Record const &Definition::def() const
     return accessedRecord();
 }
 
+String Definition::id() const
+{
+    if (!accessedRecordPtr()) return {};
+    return gets(VAR_ID);
+}
+
 int Definition::order() const
 {
     if (!accessedRecordPtr()) return -1;
diff --git a/doomsday/apps/plugins/importdeh/src/dehreader.cpp b/doomsday/apps/plugins/importdeh/src/dehreader.cpp
index 07feff6f09..beefa46fc1 100644
--- a/doomsday/apps/plugins/importdeh/src/dehreader.cpp
+++ b/doomsday/apps/plugins/importdeh/src/dehreader.cpp
@@ -1836,14 +1836,21 @@ class DehReader
         int numPatched = 0;
         for(int i = 0; i < ded->musics.size(); ++i)
         {
-            Record &music = ded->musics[i];
-            if(music.gets("lumpName").compareWithoutCase(origNamePref)) continue;
+            defn::Definition music{ded->musics[i]};
+            if (music.id().endsWith("_dd_xlt"))
+            {
+                // This is a Music definition generated by MapInfoTranslator based on
+                // a custom MAPINFO lump. We'll skip it because the music lump set in the
+                // MAPINFO should be used instead.
+                continue;
+            }
+            if (music.gets("lumpName").compareWithoutCase(origNamePref)) continue;
 
-            music.set("lumpName", newNamePref);
+            music.def().set("lumpName", newNamePref);
             numPatched++;
 
             LOG_DEBUG("Music #%i \"%s\" lumpName => \"%s\"")
-                    << i << music.gets("id") << music.gets("lumpName");
+                << i << music.id() << music.gets("lumpName");
         }
         return (numPatched > 0);
     }
diff --git a/doomsday/apps/plugins/importidtech1/src/mapinfotranslator.cpp b/doomsday/apps/plugins/importidtech1/src/mapinfotranslator.cpp
index d060e8e2ad..772a65da2b 100644
--- a/doomsday/apps/plugins/importidtech1/src/mapinfotranslator.cpp
+++ b/doomsday/apps/plugins/importidtech1/src/mapinfotranslator.cpp
@@ -655,9 +655,9 @@ namespace internal {
          */
         void parseMap(MapInfo *info = 0)
         {
+            de::Uri mapUri;
             if(!info)
             {
-                de::Uri mapUri;
                 String const mapRef = String(Str_Text(lexer.readString()));
 
                 bool isNumber;
@@ -1469,6 +1469,7 @@ DENG2_PIMPL_NOREF(MapInfoTranslator)
             if (mapUri.path().isEmpty()) continue;
 
             const String mapId         = toMapId(mapUri);
+            const String musicId       = mapId + "_dd_xlt"; // doomsday translated
             const String musicLumpName = info.gets("music");
             bool         addedMusicDef = false;
 
@@ -1478,7 +1479,7 @@ DENG2_PIMPL_NOREF(MapInfoTranslator)
 
                 // Add a music def for this custom music.
                 os << "\n\nMusic {"
-                   << "\n  ID = \"" + mapId + "\";"; // music ID == map ID
+                   << "\n  ID = \"" + musicId + "\";";
                 if (!musicLumpName.isEmpty())
                 {
                    os << "\n  Lump = \"" + musicLumpName + "\";";
@@ -1499,7 +1500,7 @@ DENG2_PIMPL_NOREF(MapInfoTranslator)
             os << "\n  Fade Table = \"" + info.gets("fadeTable") + "\";";
             if (addedMusicDef)
             {
-                os << "\n  Music = \"" + mapId + "\";";
+                os << "\n  Music = \"" + musicId + "\";";
             }
             de::Uri titleImageUri(info.gets("titleImage"), RC_NULL);
             if(!titleImageUri.path().isEmpty())