diff --git a/release-packaging/Classes/FluidBufSineFeature.sc b/release-packaging/Classes/FluidBufSineFeature.sc
new file mode 100644
index 0000000..f271177
--- /dev/null
+++ b/release-packaging/Classes/FluidBufSineFeature.sc
@@ -0,0 +1,51 @@
+FluidBufSineFeature : FluidBufProcessor {
+
+	*kr  { |source, startFrame = 0, numFrames = -1, startChan = 0, numChans = -1, frequency = -1, magnitude = -1, numPeaks = 10, detectionThreshold = -96, order = 0, freqUnit = 0, magUnit = 0, windowSize = 1024, hopSize = -1, fftSize = -1, padding = 1, trig = 1, blocking = 0|
+
+		var maxFFTSize = if (fftSize == -1) {windowSize.nextPowerOfTwo} {fftSize};
+
+		source = source.asUGenInput;
+		frequency = frequency !? {frequency.asUGenInput} ?? {-1};
+		magnitude = magnitude !? {magnitude.asUGenInput} ?? {-1};
+
+		source.isNil.if {"FluidBufSineFeature:  Invalid source buffer".throw};
+
+		^FluidProxyUgen.multiNew(\FluidBufSineFeatureTrigger, -1, source, startFrame, numFrames, startChan, numChans, frequency, magnitude, padding, numPeaks, numPeaks, detectionThreshold, order, freqUnit, magUnit, windowSize, hopSize, fftSize, maxFFTSize, trig, blocking);
+	}
+
+	*process { |server, source, startFrame = 0, numFrames = -1, startChan = 0, numChans = -1, frequency = -1, magnitude = -1, numPeaks = 10, detectionThreshold = -96, order = 0, freqUnit = 0, magUnit = 0, windowSize = 1024, hopSize = -1, fftSize = -1, padding = 1, freeWhenDone = true, action|
+
+		var maxFFTSize = if (fftSize == -1) {windowSize.nextPowerOfTwo} {fftSize};
+
+		source = source.asUGenInput;
+		frequency = frequency !? {frequency.asUGenInput} ?? {-1};
+		magnitude = magnitude !? {magnitude.asUGenInput} ?? {-1};
+
+		source.isNil.if {"FluidBufSineFeature:  Invalid source buffer".throw};
+
+		^this.new(
+			server, nil, [frequency, magnitude].select{|x| x!= -1}
+		).processList(
+			[source, startFrame, numFrames, startChan, numChans, frequency, magnitude, padding, numPeaks, numPeaks, detectionThreshold, order, freqUnit, magUnit, windowSize, hopSize, fftSize,maxFFTSize,0],freeWhenDone,action
+		);
+	}
+
+	*processBlocking { |server, source, startFrame = 0, numFrames = -1, startChan = 0, numChans = -1, frequency = -1, magnitude = -1, numPeaks = 10, detectionThreshold = -96, order = 0, freqUnit = 0, magUnit = 0, windowSize = 1024, hopSize = -1, fftSize = -1, padding = 1, freeWhenDone = true, action|
+
+		var maxFFTSize = if (fftSize == -1) {windowSize.nextPowerOfTwo} {fftSize};
+
+		source = source.asUGenInput;
+		frequency = frequency !? {frequency.asUGenInput} ?? {-1};
+		magnitude = magnitude !? {magnitude.asUGenInput} ?? {-1};
+
+		source.isNil.if {"FluidBufSineFeature:  Invalid source buffer".throw};
+
+		^this.new(
+			server, nil, [frequency, magnitude].select{|x| x!= -1}
+		).processList(
+			[source, startFrame, numFrames, startChan, numChans, frequency, magnitude, padding, numPeaks, numPeaks, detectionThreshold, order, freqUnit, magUnit, windowSize, hopSize, fftSize,maxFFTSize,1],freeWhenDone,action
+		);
+	}
+
+}
+FluidBufSineFeatureTrigger : FluidProxyUgen {}
\ No newline at end of file
diff --git a/release-packaging/Classes/FluidSineFeature.sc b/release-packaging/Classes/FluidSineFeature.sc
new file mode 100644
index 0000000..5c92c25
--- /dev/null
+++ b/release-packaging/Classes/FluidSineFeature.sc
@@ -0,0 +1,37 @@
+FluidSineFeature : FluidRTMultiOutUGen {
+	*kr { arg in = 0, numPeaks = 10, detectionThreshold = -96, order = 0, freqUnit = 0, magUnit = 0, windowSize= 1024, hopSize= -1, fftSize= -1, maxFFTSize = -1, maxNumPeaks = nil;
+
+		maxNumPeaks = maxNumPeaks ? numPeaks;
+
+		^this.multiNew('control', in.asAudioRateInput(this), numPeaks, maxNumPeaks, detectionThreshold, order, freqUnit, magUnit, windowSize, hopSize, fftSize, maxFFTSize)
+	}
+
+	init { arg ... theInputs;
+		inputs = theInputs;
+		^this.initOutputs(inputs.at(2),rate);//this instantiate the number of output from the maxNumPeaks in the multiNew order
+	}
+
+	checkInputs {
+		if(inputs.at(8).rate != 'scalar') {
+			^(": maxNumPeaks cannot be modulated.");
+		};
+		if(inputs.at(7).rate != 'scalar') {
+			^(": maxFFTSize cannot be modulated.");
+		};
+		^this.checkValidInputs;
+	}
+
+	initOutputs{|numChans,rate|
+		if(numChans.isNil or: {numChans < 1})
+		{
+			Error("No input channels").throw
+		};
+
+		channels = Array.fill(numChans * 2, { |i|
+			OutputProxy('control',this,i);
+		});
+		^channels
+	}
+
+	numOutputs { ^(channels.size); }
+}
diff --git a/release-packaging/HelpSource/Guides/FluidCorpusManipulation.schelp b/release-packaging/HelpSource/Guides/FluidCorpusManipulation.schelp
index 7426ea7..cca29dc 100644
--- a/release-packaging/HelpSource/Guides/FluidCorpusManipulation.schelp
+++ b/release-packaging/HelpSource/Guides/FluidCorpusManipulation.schelp
@@ -49,6 +49,7 @@ table::
 ##link::Classes/FluidAmpFeature:: || link::Classes/FluidBufAmpFeature:: || Detrending Amplitude Envelope Descriptor
 ##link::Classes/FluidNoveltyFeature:: || link::Classes/FluidBufNoveltyFeature:: || Novelty descriptor based on a choice of analysis descriptors
 ##link::Classes/FluidOnsetFeature:: || link::Classes/FluidBufOnsetFeature:: || Descriptor comparing spectral frames using a choice of comparisons
+##link::Classes/FluidSineFeature:: || link::Classes/FluidBufSineFeature:: || Sinusoidal peak extraction
 ::
 
 section:: Decompose Audio