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diff --git a/src/document/io/HydrogenLoader.cpp b/src/document/io/HydrogenLoader.cpp
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+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+ 
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+ 
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+ 
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+ 
+    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 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+
+#include "HydrogenLoader.h"
+
+#include <qxml.h>
+#include "base/Composition.h"
+#include "base/PropertyName.h"
+#include "base/Segment.h"
+#include "base/Studio.h"
+#include "gui/general/ProgressReporter.h"
+#include "HydrogenXMLHandler.h"
+#include <qfile.h>
+#include <qobject.h>
+#include <qstring.h>
+
+
+namespace Rosegarden
+{
+
+HydrogenLoader::HydrogenLoader(Studio *studio,
+                               QObject *parent, const char *name):
+        ProgressReporter(parent, name),
+        m_studio(studio)
+{}
+
+bool
+HydrogenLoader::load(const QString& fileName, Composition &comp)
+{
+    m_composition = &comp;
+    comp.clear();
+
+    QFile file(fileName);
+    if (!file.open(IO_ReadOnly)) {
+        return false;
+    }
+
+    m_studio->unassignAllInstruments();
+
+    HydrogenXMLHandler handler(m_composition);
+
+    QXmlInputSource source(file);
+    QXmlSimpleReader reader;
+    reader.setContentHandler(&handler);
+    reader.setErrorHandler(&handler);
+
+    bool ok = reader.parse(source);
+
+    return ok;
+}
+
+}