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diff --git a/src/test/java/com/jsyn/midi/TestMidiLoop.java b/src/test/java/com/jsyn/midi/TestMidiLoop.java
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+/*
+ * Copyright 2010 Phil Burk, Mobileer Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jsyn.midi;
+
+import javax.sound.midi.MidiDevice;
+import javax.sound.midi.MidiMessage;
+import javax.sound.midi.MidiUnavailableException;
+import javax.sound.midi.Receiver;
+
+import com.jsyn.devices.javasound.MidiDeviceTools;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Connect a USB MIDI Keyboard to the internal MIDI Synthesizer using JavaSound.
+ *
+ * @author Phil Burk (C) 2010 Mobileer Inc
+ */
+public class TestMidiLoop {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(TestMidiLoop.class);
+
+    @Test
+    private void midiLoop() {
+        try {
+            for (int result = 0, i = 0; i < 3 && result == 0; i++) {
+                result = test();
+            }
+        } catch (MidiUnavailableException | InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+
+    // Write a Receiver to get the messages from a Transmitter.
+    static class CustomReceiver implements Receiver {
+        @Override
+        public void close() {
+            System.out.print("Receiver.close() was called.");
+        }
+
+        @Override
+        public void send(MidiMessage message, long timeStamp) {
+            byte[] bytes = message.getMessage();
+            LOGGER.debug("Got " + bytes.length + " bytes.");
+        }
+    }
+
+    public int test() throws MidiUnavailableException, InterruptedException {
+
+        int result = -1;
+        MidiDevice keyboard = MidiDeviceTools.findKeyboard();
+        Receiver receiver = new CustomReceiver();
+        // Just use default synthesizer.
+        if (keyboard != null) {
+            // If you forget to open them you will hear no sound.
+            keyboard.open();
+            // Put the receiver in the transmitter.
+            // This gives fairly low latency playing.
+            keyboard.getTransmitter().setReceiver(receiver);
+            LOGGER.debug("Play MIDI keyboard: " + keyboard.getDeviceInfo().getDescription());
+            result = 0;
+            Thread.sleep(4000);
+            LOGGER.debug("Close the keyboard. It may not work after this according to the docs!");
+            keyboard.close();
+        } else {
+            LOGGER.debug("Could not find a keyboard.");
+        }
+        return result;
+    }
+
+
+}