diff --git a/src/common/serialization/clap/ext/audio-ports.h b/src/common/serialization/clap/ext/audio-ports.h
index f6f0ea27..c8833775 100644
--- a/src/common/serialization/clap/ext/audio-ports.h
+++ b/src/common/serialization/clap/ext/audio-ports.h
@@ -66,8 +66,8 @@ const char* audio_port_type_to_string(AudioPortType port_type);
  */
 struct AudioPortInfo {
     /**
-     * Parse a host descriptor so it can be serialized and sent to the Wine
-     * plugin host.
+     * Parse a native `clap_audio_port_info` struct so it can be serialized and
+     * sent to the Wine plugin host.
      */
     AudioPortInfo(const clap_audio_port_info_t& original);
 
diff --git a/src/common/serialization/clap/ext/note-ports.cpp b/src/common/serialization/clap/ext/note-ports.cpp
new file mode 100644
index 00000000..3b39160a
--- /dev/null
+++ b/src/common/serialization/clap/ext/note-ports.cpp
@@ -0,0 +1,41 @@
+// yabridge: a Wine plugin bridge
+// Copyright (C) 2020-2022 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 "note-ports.h"
+
+#include "../../../utils.h"
+
+namespace clap {
+namespace ext {
+namespace note_ports {
+
+NotePortInfo::NotePortInfo(const clap_note_port_info_t& original)
+    : id(original.id),
+      supported_dialects(original.supported_dialects),
+      preferred_dialect(original.preferred_dialect),
+      name(original.name) {}
+
+void NotePortInfo::reconstruct(clap_note_port_info_t& port_info) const {
+    port_info = clap_note_port_info_t{};
+    port_info.id = id;
+    port_info.supported_dialects = supported_dialects;
+    port_info.preferred_dialect = preferred_dialect;
+    strlcpy_buffer<sizeof(port_info.name)>(port_info.name, name);
+}
+
+}  // namespace note_ports
+}  // namespace ext
+}  // namespace clap
diff --git a/src/common/serialization/clap/ext/note-ports.h b/src/common/serialization/clap/ext/note-ports.h
new file mode 100644
index 00000000..32d39b1a
--- /dev/null
+++ b/src/common/serialization/clap/ext/note-ports.h
@@ -0,0 +1,156 @@
+// yabridge: a Wine plugin bridge
+// Copyright (C) 2020-2022 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 <optional>
+#include <string>
+#include <vector>
+
+#include <clap/ext/note-ports.h>
+
+#include "../../../bitsery/ext/in-place-optional.h"
+#include "../../common.h"
+
+// Serialization messages for `clap/ext/note-ports.h`
+
+namespace clap {
+namespace ext {
+namespace note_ports {
+
+/**
+ * A serializable version of `clap_note_port_info` that owns all of the data it
+ * references.
+ */
+struct NotePortInfo {
+    /**
+     * Parse a native `clap_note_port_info` struct so it can be serialized and
+     * sent to the Wine plugin host.
+     */
+    NotePortInfo(const clap_note_port_info_t& original);
+
+    /**
+     * Default constructor for bitsery.
+     */
+    NotePortInfo() {}
+
+    /**
+     * Write the stored information to a host provided info struct.
+     */
+    void reconstruct(clap_note_port_info_t& port_info) const;
+
+    clap_id id;
+    uint32_t supported_dialects;
+    uint32_t preferred_dialect;
+    std::string name;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value4b(id);
+        s.value4b(supported_dialects);
+        s.value4b(preferred_dialect);
+        s.text1b(name, 4096);
+    }
+};
+
+namespace plugin {
+
+/**
+ * Message struct for `clap_plugin_note_ports::count()`.
+ */
+struct Count {
+    using Response = PrimitiveResponse<uint32_t>;
+
+    native_size_t instance_id;
+    bool is_input;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value8b(instance_id);
+        s.value1b(is_input);
+    }
+};
+
+/**
+ * The response to the `clap::ext::note_ports::Get` message defined below.
+ */
+struct GetResponse {
+    std::optional<NotePortInfo> result;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.ext(result, bitsery::ext::InPlaceOptional(),
+              [](S& s, auto& v) { s.object(v); });
+    }
+};
+
+/**
+ * Message struct for `clap_plugin_note_ports::get()`.
+ */
+struct Get {
+    using Response = GetResponse;
+
+    native_size_t instance_id;
+    uint32_t index;
+    bool is_input;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value8b(instance_id);
+        s.value4b(index);
+        s.value1b(is_input);
+    }
+};
+
+}  // namespace plugin
+
+namespace host {
+
+/**
+ * Message struct for `clap_host_note_ports::supported_dialects()`.
+ */
+struct SupportedDialects {
+    using Response = PrimitiveResponse<uint32_t>;
+
+    native_size_t owner_instance_id;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value8b(owner_instance_id);
+    }
+};
+
+/**
+ * Message struct for `clap_host_note_ports::rescan()`.
+ */
+struct Rescan {
+    using Response = Ack;
+
+    native_size_t owner_instance_id;
+    uint32_t flags;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value8b(owner_instance_id);
+        s.value4b(flags);
+    }
+};
+
+}  // namespace host
+
+}  // namespace note_ports
+}  // namespace ext
+}  // namespace clap
diff --git a/src/plugin/meson.build b/src/plugin/meson.build
index 48d1b332..f6e2e659 100644
--- a/src/plugin/meson.build
+++ b/src/plugin/meson.build
@@ -78,6 +78,7 @@ if with_clap
     '../common/plugins.cpp',
     '../common/process.cpp',
     '../common/serialization/clap/ext/audio-ports.cpp',
+    '../common/serialization/clap/ext/note-ports.cpp',
     '../common/serialization/clap/host.cpp',
     '../common/serialization/clap/plugin.cpp',
     '../common/utils.cpp',
diff --git a/src/wine-host/meson.build b/src/wine-host/meson.build
index 99d5a421..375ffc41 100644
--- a/src/wine-host/meson.build
+++ b/src/wine-host/meson.build
@@ -81,6 +81,7 @@ if with_clap
   host_sources += files(
     '../common/logging/clap.cpp',
     '../common/serialization/clap/ext/audio-ports.cpp',
+    '../common/serialization/clap/ext/note-ports.cpp',
     '../common/serialization/clap/plugin.cpp',
     'bridges/clap-impls/host-proxy.cpp',
     'bridges/clap.cpp',