diff --git a/ktaglib/src/main/cpp/JVMTagMap.cpp b/ktaglib/src/main/cpp/JVMTagMap.cpp
new file mode 100644
index 000000000..db572b251
--- /dev/null
+++ b/ktaglib/src/main/cpp/JVMTagMap.cpp
@@ -0,0 +1,70 @@
+//
+// Created by oxycblt on 12/12/24.
+//
+
+#include "JVMTagMap.h"
+
+JVMTagMap::JVMTagMap(JNIEnv *env) : env(env) {
+    jclass hashMapClass = env->FindClass("java/util/HashMap");
+    jmethodID init = env->GetMethodID(hashMapClass, "<init>", "()V");
+    hashMap = env->NewObject(hashMapClass, init);
+    hashMapGetMethod = env->GetMethodID(hashMapClass, "get", "(Ljava/lang/Object;)Ljava/lang/Object;");
+    hashMapPutMethod = env->GetMethodID(hashMapClass, "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
+    env->DeleteLocalRef(hashMapClass);
+
+    jclass arrayListClass = env->FindClass("java/util/ArrayList");
+    arrayListInitMethod = env->GetMethodID(arrayListClass, "<init>", "()V");
+    arrayListAddMethod = env->GetMethodID(arrayListClass, "add", "(Ljava/lang/Object;)Z");
+    env->DeleteLocalRef(arrayListClass);
+}
+
+JVMTagMap::~JVMTagMap() {
+    env->DeleteLocalRef(hashMap);
+}
+
+void JVMTagMap::add(TagLib::String &key, TagLib::String &value) {
+    jstring jKey = env->NewStringUTF(key.toCString(true));
+    jstring jValue = env->NewStringUTF(value.toCString(true));
+
+    // check if theres already a value arraylist in the map
+    jobject existingValue = env->CallObjectMethod(hashMap, hashMapGetMethod, jKey);
+    // if there is, add to the value to the existing arraylist
+    if (existingValue != nullptr) {
+        env->CallBooleanMethod(existingValue, arrayListAddMethod, jValue);
+    } else {
+        // if there isn't, create a new arraylist and add the value to it
+        jclass arrayListClass = env->FindClass("java/util/ArrayList");
+        jobject arrayList = env->NewObject(arrayListClass, arrayListInitMethod);
+        env->CallBooleanMethod(arrayList, arrayListAddMethod, jValue);
+        env->CallObjectMethod(hashMap, hashMapPutMethod, jKey, arrayList);
+        env->DeleteLocalRef(arrayListClass);
+    }
+}
+
+void JVMTagMap::add(TagLib::String &key, TagLib::StringList &value) {
+    jstring jKey = env->NewStringUTF(key.toCString(true));
+
+    // check if theres already a value arraylist in the map
+    jobject existingValue = env->CallObjectMethod(hashMap, hashMapGetMethod, jKey);
+    // if there is, add to the value to the existing arraylist
+    if (existingValue != nullptr) {
+        for (auto &val : value) {
+            jstring jValue = env->NewStringUTF(val.toCString(true));
+            env->CallBooleanMethod(existingValue, arrayListAddMethod, jValue);
+        }
+    } else {
+        // if there isn't, create a new arraylist and add the value to it
+        jclass arrayListClass = env->FindClass("java/util/ArrayList");
+        jobject arrayList = env->NewObject(arrayListClass, arrayListInitMethod);
+        for (auto &val : value) {
+            jstring jValue = env->NewStringUTF(val.toCString(true));
+            env->CallBooleanMethod(arrayList, arrayListAddMethod, jValue);
+        }
+        env->CallObjectMethod(hashMap, hashMapPutMethod, jKey, arrayList);
+        env->DeleteLocalRef(arrayListClass);
+    }
+}
+
+jobject JVMTagMap::getObject() {
+    return hashMap;
+}
\ No newline at end of file
diff --git a/ktaglib/src/main/cpp/JVMTagMap.h b/ktaglib/src/main/cpp/JVMTagMap.h
new file mode 100644
index 000000000..db6f543ab
--- /dev/null
+++ b/ktaglib/src/main/cpp/JVMTagMap.h
@@ -0,0 +1,36 @@
+//
+// Created by oxycblt on 12/12/24.
+//
+
+#ifndef AUXIO_JVMTAGMAP_H
+#define AUXIO_JVMTAGMAP_H
+
+#include <jni.h>
+#include <string_view>
+#include <taglib/tstring.h>
+#include <taglib/tstringlist.h>
+
+class JVMTagMap {
+public:
+    JVMTagMap(JNIEnv *env);
+    ~JVMTagMap();
+
+    JVMTagMap(const JVMTagMap &) = delete;
+    JVMTagMap &operator=(const JVMTagMap &) = delete;
+
+    void add(TagLib::String &key, TagLib::String &value);
+    void add(TagLib::String &key, TagLib::StringList &value);
+
+    jobject getObject();
+
+private:
+    JNIEnv *env;
+    jobject hashMap;
+    jmethodID hashMapGetMethod;
+    jmethodID hashMapPutMethod;
+    jmethodID arrayListInitMethod;
+    jmethodID arrayListAddMethod;
+};
+
+
+#endif //AUXIO_JVMTAGMAP_H