diff --git a/meson.build b/meson.build
index 1c7b9d38..f722f8ee 100644
--- a/meson.build
+++ b/meson.build
@@ -87,6 +87,7 @@ vst3_plugin_sources = [
   'src/common/serialization/vst3/plugin/plugin-base.cpp',
   'src/common/serialization/vst3/component-handler/component-handler.cpp',
   'src/common/serialization/vst3/host-context/host-application.cpp',
+  'src/common/serialization/vst3/attribute-list.cpp',
   'src/common/serialization/vst3/base.cpp',
   'src/common/serialization/vst3/component-handler-proxy.cpp',
   'src/common/serialization/vst3/event-list.cpp',
@@ -140,6 +141,7 @@ if with_vst3
     'src/common/serialization/vst3/plugin/plugin-base.cpp',
     'src/common/serialization/vst3/component-handler/component-handler.cpp',
     'src/common/serialization/vst3/host-context/host-application.cpp',
+    'src/common/serialization/vst3/attribute-list.cpp',
     'src/common/serialization/vst3/base.cpp',
     'src/common/serialization/vst3/component-handler-proxy.cpp',
     'src/common/serialization/vst3/event-list.cpp',
diff --git a/src/common/serialization/vst3/README.md b/src/common/serialization/vst3/README.md
index bc6837d8..f4aabc68 100644
--- a/src/common/serialization/vst3/README.md
+++ b/src/common/serialization/vst3/README.md
@@ -36,6 +36,7 @@ implemented for serialization purposes:
 
 | yabridge class       | Interfaces          | Notes                                                                  |
 | -------------------- | ------------------- | ---------------------------------------------------------------------- |
+| `YaAttributeList`    | `IAttributeList`    |                                                                        |
 | `YaEventList`        | `IEventList`        | Comes with a lot of serialization wrappers around the related structs. |
 | `YaParameterChanges` | `IParameterChanges` |                                                                        |
 | `YaParamValueQueue`  | `IParamValueQueue`  |                                                                        |
diff --git a/src/common/serialization/vst3/attribute-list.cpp b/src/common/serialization/vst3/attribute-list.cpp
new file mode 100644
index 00000000..33311fe3
--- /dev/null
+++ b/src/common/serialization/vst3/attribute-list.cpp
@@ -0,0 +1,115 @@
+// yabridge: a Wine VST bridge
+// Copyright (C) 2020  Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "attribute-list.h"
+
+YaAttributeList::YaAttributeList(){FUNKNOWN_CTOR}
+
+YaAttributeList::~YaAttributeList() {
+    FUNKNOWN_DTOR
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdelete-non-virtual-dtor"
+IMPLEMENT_FUNKNOWN_METHODS(YaAttributeList,
+                           Steinberg::Vst::IAttributeList,
+                           Steinberg::Vst::IAttributeList::iid)
+#pragma GCC diagnostic pop
+
+tresult PLUGIN_API YaAttributeList::setInt(AttrID id, int64 value) {
+    attrs_int[id] = value;
+    return Steinberg::kResultOk;
+}
+
+tresult PLUGIN_API YaAttributeList::getInt(AttrID id, int64& value) {
+    if (const auto it = attrs_int.find(id); it != attrs_int.end()) {
+        value = it->second;
+        return Steinberg::kResultOk;
+    } else {
+        return Steinberg::kResultFalse;
+    }
+}
+
+tresult PLUGIN_API YaAttributeList::setFloat(AttrID id, double value) {
+    attrs_float[id] = value;
+    return Steinberg::kResultOk;
+}
+
+tresult PLUGIN_API YaAttributeList::getFloat(AttrID id, double& value) {
+    if (const auto it = attrs_float.find(id); it != attrs_float.end()) {
+        value = it->second;
+        return Steinberg::kResultOk;
+    } else {
+        return Steinberg::kResultFalse;
+    }
+}
+
+tresult PLUGIN_API
+YaAttributeList::setString(AttrID id, const Steinberg::Vst::TChar* string) {
+    if (!string) {
+        return Steinberg::kInvalidArgument;
+    }
+
+    attrs_string[id] = tchar_pointer_to_u16string(string);
+    return Steinberg::kResultOk;
+}
+
+tresult PLUGIN_API YaAttributeList::getString(AttrID id,
+                                              Steinberg::Vst::TChar* string,
+                                              uint32 sizeInBytes) {
+    if (!string) {
+        return Steinberg::kInvalidArgument;
+    }
+
+    if (const auto it = attrs_string.find(id); it != attrs_string.end()) {
+        // We may only copy `sizeInBytes / 2` UTF-16 characters to `string`,
+        // We'll also have to make sure it's null terminated, so we'll reserve
+        // another byte for that.
+        const size_t copy_characters = std::min(
+            (static_cast<size_t>(sizeInBytes) / sizeof(Steinberg::Vst::TChar)) -
+                1,
+            it->second.size());
+        std::copy_n(it->second.begin(), copy_characters, string);
+        string[copy_characters] = 0;
+
+        return Steinberg::kResultOk;
+    } else {
+        return Steinberg::kResultFalse;
+    }
+}
+
+tresult PLUGIN_API YaAttributeList::setBinary(AttrID id,
+                                              const void* data,
+                                              uint32 sizeInBytes) {
+    if (!data) {
+        return Steinberg::kInvalidArgument;
+    }
+
+    const uint8_t* data_bytes = static_cast<const uint8_t*>(data);
+    attrs_binary[id].assign(data_bytes, data_bytes + sizeInBytes);
+    return Steinberg::kResultOk;
+}
+tresult PLUGIN_API YaAttributeList::getBinary(AttrID id,
+                                              const void*& data,
+                                              uint32& sizeInBytes) {
+    if (const auto it = attrs_binary.find(id); it != attrs_binary.end()) {
+        data = it->second.data();
+        sizeInBytes = it->second.size();
+        return Steinberg::kResultOk;
+    } else {
+        return Steinberg::kResultFalse;
+    }
+}
diff --git a/src/common/serialization/vst3/attribute-list.h b/src/common/serialization/vst3/attribute-list.h
new file mode 100644
index 00000000..f7cd586c
--- /dev/null
+++ b/src/common/serialization/vst3/attribute-list.h
@@ -0,0 +1,90 @@
+// yabridge: a Wine VST bridge
+// Copyright (C) 2020  Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <unordered_map>
+
+#include <bitsery/ext/std_map.h>
+#include <bitsery/ext/std_optional.h>
+#include <pluginterfaces/vst/ivstmessage.h>
+
+#include "base.h"
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
+
+/**
+ * Wraps around `IAttributeList` for storing parameters in `YaMessage`.
+ */
+class YaAttributeList : public Steinberg::Vst::IAttributeList {
+   public:
+    /**
+     * Default constructor with an empty attributeList. The plugin can use this
+     * to write a attributeList.
+     */
+    YaAttributeList();
+
+    ~YaAttributeList();
+
+    DECLARE_FUNKNOWN_METHODS
+
+    virtual tresult PLUGIN_API setInt(AttrID id, int64 value) override;
+    virtual tresult PLUGIN_API getInt(AttrID id, int64& value) override;
+    virtual tresult PLUGIN_API setFloat(AttrID id, double value) override;
+    virtual tresult PLUGIN_API getFloat(AttrID id, double& value) override;
+    virtual tresult PLUGIN_API
+    setString(AttrID id, const Steinberg::Vst::TChar* string) override;
+    virtual tresult PLUGIN_API getString(AttrID id,
+                                         Steinberg::Vst::TChar* string,
+                                         uint32 sizeInBytes) override;
+    virtual tresult PLUGIN_API setBinary(AttrID id,
+                                         const void* data,
+                                         uint32 sizeInBytes) override;
+    virtual tresult PLUGIN_API getBinary(AttrID id,
+                                         const void*& data,
+                                         uint32& sizeInBytes) override;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.ext(attrs_int, bitsery::ext::StdMap{1 << 20},
+              [](S& s, AttrID& key, int64& value) {
+                  s.text1b(key, 1024);
+                  s.value8b(value);
+              });
+        s.ext(attrs_float, bitsery::ext::StdMap{1 << 20},
+              [](S& s, AttrID& key, double& value) {
+                  s.text1b(key, 1024);
+                  s.value8b(value);
+              });
+        s.ext(attrs_string, bitsery::ext::StdMap{1 << 20},
+              [](S& s, AttrID& key, double& value) {
+                  s.text1b(key, 1024);
+                  s.text2b(value, 1 << 20);
+              });
+        s.ext(attrs_binary, bitsery::ext::StdMap{1 << 20},
+              [](S& s, AttrID& key, std::vector<uint8_t>& value) {
+                  s.text1b(key, 1024);
+                  s.container1b(value, 1 << 20);
+              });
+    }
+
+   private:
+    std::unordered_map<std::string, int64> attrs_int;
+    std::unordered_map<std::string, double> attrs_float;
+    std::unordered_map<std::string, std::u16string> attrs_string;
+    std::unordered_map<std::string, std::vector<uint8_t>> attrs_binary;
+};