diff --git a/examples/Raw/Aggregate.hpp b/examples/Raw/Aggregate.hpp
index 7aba7e6a..5eb0ab82 100644
--- a/examples/Raw/Aggregate.hpp
+++ b/examples/Raw/Aggregate.hpp
@@ -13,6 +13,13 @@ namespace examples
 {
 /**
  * This example showcases using user-defined aggregates for value ports.
+ *
+ * Note that it only makes sense in environments that support hierarchic data structures:
+ * - ossia
+ * - Max/MSP with a dict as input
+ * - programming languages like Python
+ *
+ * For instance, it does not make sense in PureData or audio plugins
  */
 struct Aggregate
 {
diff --git a/include/avnd/binding/pd/audio_processor.hpp b/include/avnd/binding/pd/audio_processor.hpp
index 6e092670..88391b33 100644
--- a/include/avnd/binding/pd/audio_processor.hpp
+++ b/include/avnd/binding/pd/audio_processor.hpp
@@ -4,6 +4,7 @@
 
 #include <avnd/binding/pd/helpers.hpp>
 #include <avnd/binding/pd/init.hpp>
+#include <avnd/binding/pd/inputs.hpp>
 #include <avnd/binding/pd/messages.hpp>
 #include <avnd/common/export.hpp>
 #include <avnd/concepts/object.hpp>
@@ -58,6 +59,7 @@ struct audio_processor
   avnd::process_adapter<T> processor;
 
   std::array<t_int, dsp_input_count> dsp_inputs;
+  inputs<T> input_setup;
 
   [[no_unique_address]] init_arguments<T> init_setup;
   [[no_unique_address]] messages<T> messages_setup;
@@ -84,6 +86,8 @@ struct audio_processor
     for(int i = 0; i < output_channels; i++)
       outlet_new(&x_obj, &s_signal);
 
+    // control_inputs is *not* initialized here, all the messages will go through 1st inlet.
+
     /// Initialize controls
     if constexpr(avnd::has_inputs<T>)
     {
@@ -160,61 +164,13 @@ struct audio_processor
     return ++w;
   }
 
-  void process_inlet_control(t_symbol* s, int argc, t_atom* argv)
-  {
-    for(auto state : implementation.full_state())
-    {
-      switch(argv[0].a_type)
-      {
-        case A_FLOAT: {
-          // Note: teeeechnically, one could store a map of string -> {void*,typeid} and then cast...
-          // but most pd externals seem to just do a chain of if() so this is equivalent
-          float res = argv[0].a_w.w_float;
-          avnd::for_each_field_ref(state.inputs, [s, res, &state]<typename C>(C& ctl) {
-            if constexpr(
-                avnd::float_parameter<C> || avnd::int_parameter<C>
-                || avnd::bool_parameter<C>)
-            {
-              static constexpr auto control_name = pd::get_name_symbol<C>();
-              if(control_name == s->s_name)
-              {
-                avnd::apply_control(ctl, res);
-                if_possible(ctl.update(state.effect));
-              }
-            }
-          });
-          break;
-        }
-
-        case A_SYMBOL: {
-          // TODO ?
-          std::string_view res = argv[0].a_w.w_symbol->s_name;
-          // thread_local for perf ?
-          avnd::for_each_field_ref(state.inputs, [s, &res, &state]<typename C>(C& ctl) {
-            if constexpr(avnd::string_parameter<C>)
-            {
-              static constexpr auto control_name = pd::get_name_symbol<C>();
-              if(control_name == s->s_name)
-              {
-                avnd::apply_control(ctl, std::move(res));
-                if_possible(ctl.update(state.effect));
-              }
-            }
-          });
-          break;
-        }
-
-        default:
-          break;
-      }
-    }
-  }
-
   void process(t_symbol* s, int argc, t_atom* argv)
   {
     // First try to process messages handled explicitely in the object
     if(messages_setup.process_messages(implementation, s, argc, argv))
       return;
+    if(input_setup.process_inputs(implementation, s, argc, argv))
+      return;
 
     // Then some default behaviour
     switch(argc)
@@ -237,7 +193,7 @@ struct audio_processor
       }
       default: {
         // Apply the data to the inlets.
-        process_inlet_control(s, argc, argv);
+        // process_inlet_control(s, argc, argv); // -> done in input_setup.process_inputs
 
         // Then bang
         // output_setup.commit(implementation);
diff --git a/include/avnd/binding/pd/inputs.hpp b/include/avnd/binding/pd/inputs.hpp
index 67a79d3b..8f66fc3b 100644
--- a/include/avnd/binding/pd/inputs.hpp
+++ b/include/avnd/binding/pd/inputs.hpp
@@ -371,6 +371,19 @@ struct inputs
         return true;
       }
     }
+    else
+    {
+      static std::once_flag f;
+      std::call_once(f, [] {
+        post("Field type not supported as input: %s",
+#if defined(_MSC_VER)
+             __FUNCSIG__
+#else
+             __PRETTY_FUNCTION__
+#endif
+        );
+      });
+    }
     return false;
   }
 
@@ -382,15 +395,19 @@ struct inputs
     {
       bool ok = false;
       std::string_view symname = s->s_name;
-      avnd::parameter_input_introspection<T>::for_all(
-          avnd::get_inputs(implementation), [&]<typename M>(M& field) {
-        if(ok)
-          return;
-        if(symname == pd::get_name_symbol<M>())
-        {
-          ok = process_inlet_control(implementation.effect, field, argc, argv);
-        }
-      });
+
+      for(auto state : implementation.full_state())
+      {
+        avnd::parameter_input_introspection<T>::for_all(
+            state.inputs, [&,&obj=state.effect]<typename M>(M& field) {
+          if(ok)
+            return;
+          if(symname == pd::get_name_symbol<M>())
+          {
+            ok = process_inlet_control(obj, field, argc, argv);
+          }
+        });
+      }
       return ok;
     }
     return false;
diff --git a/include/avnd/binding/pd/message_processor.hpp b/include/avnd/binding/pd/message_processor.hpp
index 38cd39b9..5a9592ca 100644
--- a/include/avnd/binding/pd/message_processor.hpp
+++ b/include/avnd/binding/pd/message_processor.hpp
@@ -164,7 +164,6 @@ struct message_processor
 
   void process(t_symbol* s, int argc, t_atom* argv)
   {
-
     // First try to process messages handled explicitely in the object
     if(messages_setup.process_messages(implementation, s, argc, argv))
       return;