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diff --git a/audio/softsynth/mt32/Poly.h b/audio/softsynth/mt32/Poly.h
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+++ b/audio/softsynth/mt32/Poly.h
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+/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
+ * Copyright (C) 2011 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MT32EMU_POLY_H
+#define MT32EMU_POLY_H
+
+namespace MT32Emu {
+
+class Part;
+
+enum PolyState {
+	POLY_Playing,
+	POLY_Held, // This marks keys that have been released on the keyboard, but are being held by the pedal
+	POLY_Releasing,
+	POLY_Inactive
+};
+
+class Poly {
+private:
+	Part *part;
+	unsigned int key;
+	unsigned int velocity;
+	unsigned int activePartialCount;
+	bool sustain;
+
+	PolyState state;
+
+	Partial *partials[4];
+
+public:
+	Poly(Part *part);
+	void reset(unsigned int key, unsigned int velocity, bool sustain, Partial **partials);
+	bool noteOff(bool pedalHeld);
+	bool stopPedalHold();
+	bool startDecay();
+	bool startAbort();
+	void terminate();
+
+	void backupCacheToPartials(PatchCache cache[4]);
+
+	unsigned int getKey() const;
+	unsigned int getVelocity() const;
+	bool canSustain() const;
+	PolyState getState() const;
+	unsigned int getActivePartialCount() const;
+	bool isActive() const;
+
+	void partialDeactivated(Partial *partial);
+};
+
+}
+
+#endif /* POLY_H_ */