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diff --git a/libjava/classpath/javax/sound/midi/Track.java b/libjava/classpath/javax/sound/midi/Track.java
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+/* Track.java -- A track of MIDI events
+   Copyright (C) 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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 2, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.sound.midi;
+
+import java.util.HashSet;
+import java.util.Vector;
+
+/**
+ * A Track contains a list of timecoded MIDI events for processing 
+ * by a Sequencer.
+ * 
+ * @author Anthony Green (green@redhat.com)
+ * @since 1.3
+ *
+ */
+public class Track
+{
+  /**
+   * The list of MidiEvents for this track. 
+   */
+  protected Vector events;
+  
+  // A HashSet to speed processing
+  private HashSet eventSet;
+  
+  /**
+   * Add a new event to this track.  Specific events may only be added once.
+   * The event will be inserted into the appropriate spot in the event list
+   * based on its timecode.
+   * 
+   * @param event the event to add
+   * @return true if the event was added, false otherwise
+   */
+  public boolean add(MidiEvent event)
+  {
+    synchronized (events)
+    {
+      if (eventSet.contains(event))
+        return false;
+    
+      eventSet.add(event);
+
+      long targetTick = event.getTick();
+      int i = events.size() - 1;
+      while (i >= 0 && (((MidiEvent)events.get(i)).getTick() > targetTick))
+        i--;
+      events.add(i+1, event);
+      return true;
+    }
+  }
+    
+  /**
+   * Remove an event from this track.
+   * 
+   * @param event the event to remove
+   * @return true if the event was removed, false otherwise
+   */
+  public boolean remove(MidiEvent event)
+  {
+    synchronized (events)
+    {
+      if (! eventSet.remove(event))
+        return false;
+          
+      int i = events.indexOf(event);
+      if (i >= 0)
+        {
+          events.remove(i);
+          return true;
+        }
+         
+      throw new InternalError("event in set but not list");
+    }
+  }
+  
+  /**
+   * Get an event idetified by its order index
+   * 
+   * @param index the location of the event to get
+   * @return the event at index
+   * @throws ArrayIndexOutOfBoundsException if index is out of bounds
+   */
+  public MidiEvent get(int index) throws ArrayIndexOutOfBoundsException
+  {
+    synchronized (events)
+    {
+      try
+      {
+        return (MidiEvent) events.get(index);
+      }
+      catch (IndexOutOfBoundsException e)
+      {
+        throw (ArrayIndexOutOfBoundsException) 
+          new ArrayIndexOutOfBoundsException().initCause(e);
+      }
+    }
+  }
+  
+  
+  /**
+   * Get the number events in this track.
+   * 
+   * @return the number of events in this track
+   */
+  public int size()
+  {
+    return events.size();
+  }
+
+  /**
+   * Get the length of the track in MIDI ticks.
+   * 
+   * @return the length of the track in MIDI ticks
+   */
+  public long ticks()
+  {
+    synchronized (events)
+    {
+      int size = events.size();
+      return ((MidiEvent) events.get(size - 1)).getTick();
+    }
+  }
+ }
+