diff --git a/Sources/VLLilypondWriter.cpp b/Sources/VLLilypondWriter.cpp
index 6a55303..2cc19f5 100644
--- a/Sources/VLLilypondWriter.cpp
+++ b/Sources/VLLilypondWriter.cpp
@@ -294,7 +294,7 @@ void VLLilypondWriter::VisitChord(VLChord & c)
     if (name == "r")
         name = "s";
 	char duration[16];
-	if (c.fDuration.fNum == 1 && !(c.fDuration.fDenom & (c.fDuration.fDenom-1))) // Power of two
+	if (c.fDuration.IsPowerOfTwo()) 
 		sprintf(duration, "%d", c.fDuration.fDenom);
 	else
 		sprintf(duration, "1*%d/%d", c.fDuration.fNum, c.fDuration.fDenom);
diff --git a/Sources/VLMMAWriter.cpp b/Sources/VLMMAWriter.cpp
index 764c50d..2141d86 100644
--- a/Sources/VLMMAWriter.cpp
+++ b/Sources/VLMMAWriter.cpp
@@ -117,7 +117,7 @@ void VLMMAWriter::VisitNote(VLLyricsNote & n)
 	char buf[4];
 	std::string dur;
 	if (n.fDuration.fNum == 1) 
-		if (!(n.fDuration.fDenom & (n.fDuration.fDenom-1))) {
+		if (n.fDuration.IsPowerOfTwo()) {
 			sprintf(buf, "%d", n.fDuration.fDenom);
 			dur = buf;
 		} else if (n.fDuration.fDenom == 3) {
diff --git a/Sources/VLModel.cpp b/Sources/VLModel.cpp
index 7dabbd2..8fa14ae 100644
--- a/Sources/VLModel.cpp
+++ b/Sources/VLModel.cpp
@@ -78,6 +78,15 @@ VLFraction & VLFraction::operator%=(VLFraction other)
 	return *this *= other;
 }
 
+bool VLFraction::IsPowerOfTwo() const
+{
+    //
+    // !(x & (x-1)) is true if x had only a single bit set and thus
+    // is a power of two. We're not really interested in the case >1
+    //
+    return fNum == 1 && !(fDenom & (fDenom-1));
+}
+
 #pragma mark -
 #pragma mark class VLNote
 
@@ -114,10 +123,7 @@ void VLNote::MakeRepresentable()
 	fVisual	= kWhole | (fVisual & kAccidentalsMask);
 	VLFraction part(1,1);
 	VLFraction triplet(2,3);
-	//
-	// Power of 2 denominators are not triplets
-	//
-	bool 	   nonTriplet(!(fDuration.fDenom & (fDuration.fDenom-1)));
+	bool 	   nonTriplet   = fDuration.IsPowerOfTwo();
 	while (part.fDenom < 64) {
 		if (fDuration >= part) {
 			fDuration = part;
diff --git a/Sources/VLModel.h b/Sources/VLModel.h
index 7e093f8..c7500cc 100644
--- a/Sources/VLModel.h
+++ b/Sources/VLModel.h
@@ -36,6 +36,8 @@ struct VLFraction : VLFract {
 	VLFraction & operator%=(VLFraction other);
 
 	VLFraction & Normalize();
+    
+    bool         IsPowerOfTwo() const;
 };
 
 inline float operator*(VLFraction f, float sc)
diff --git a/Sources/VLPListDocument.mm b/Sources/VLPListDocument.mm
index b95f1d3..a284760 100644
--- a/Sources/VLPListDocument.mm
+++ b/Sources/VLPListDocument.mm
@@ -202,7 +202,7 @@ void VLPlistVisitor::VisitNote(VLLyricsNote & n)
                 // 4th 4th 8th 
                 //
                 [nd setObject:[NSNumber numberWithInt:fTupletNote] forKey:@"normalType"];
-                if (fTupletDur.fNum == 1 && !(fTupletDur.fDenom&(fTupletDur.fDenom-1)))
+                if (fTupletDur.IsPowerOfTwo())
                     fInTuplet = 0;
             }
         } else if (fInTuplet == tupletNum) 
diff --git a/Sources/VLSheetViewNotes.mm b/Sources/VLSheetViewNotes.mm
index 8bfda84..730a0fa 100644
--- a/Sources/VLSheetViewNotes.mm
+++ b/Sources/VLSheetViewNotes.mm
@@ -388,8 +388,8 @@
 				}
                 ++inTuplet;
                 tupletDur   += note->fDuration / VLNote::TupletDenom(tuplet);
-                if (tuplet == VLNote::kTriplet ? (tupletDur.fNum == 1 && !(tupletDur.fDenom & (tupletDur.fDenom-1)))
-                    : inTuplet == VLNote::TupletNum(tuplet)
+                if (tuplet == VLNote::kTriplet 
+                    ? tupletDur.IsPowerOfTwo() : inTuplet == VLNote::TupletNum(tuplet)
                 ) {
                     //
                     // Tuplet adds up to power of two fraction