diff --git a/release-packaging/Classes/FluidBufOnsetSlice.sc b/release-packaging/Classes/FluidBufOnsetSlice.sc
new file mode 100644
index 0000000..d038576
--- /dev/null
+++ b/release-packaging/Classes/FluidBufOnsetSlice.sc
@@ -0,0 +1,15 @@
+FluidBufOnsetSlice{
+		*process { arg server, srcBufNum, startAt = 0, nFrames = -1, startChan = 0, nChans = -1, idxBufNum, function = 0, threshold = 0.1, debounce = 2, filterSize = 5, frameDelta = 0, winSize = 1024, hopSize = 256, fftSize = 1024, maxFFTSize = 16384;
+
+		if(srcBufNum.isNil) {Error("Invalid Buffer % %".format(this.class.name, thisMethod.name)).throw};
+
+		server = server ? Server.default;
+		idxBufNum = idxBufNum ? -1;
+
+
+		//NB For wrapped versions of NRT classes, we set the params for maxima to
+		//whatever has been passed in language-side (e.g maxFFTSize still exists as a parameter for the server plugin, but makes less sense here: it just needs to be set to a legal value)
+
+		server.sendMsg(\cmd, \BufOnsetSlice, srcBufNum, startAt, nFrames, startChan, nChans, idxBufNum, function, threshold, debounce, filterSize, frameDelta, winSize, hopSize, fftSize, maxFFTSize);
+}
+}
diff --git a/release-packaging/Classes/FluidOnsetSlice.sc b/release-packaging/Classes/FluidOnsetSlice.sc
new file mode 100644
index 0000000..166614e
--- /dev/null
+++ b/release-packaging/Classes/FluidOnsetSlice.sc
@@ -0,0 +1,5 @@
+FluidOnsetSlice : UGen {
+	*ar { arg in = 0, function = 0, threshold = 0.1, debounce = 2, filterSize = 5, frameDelta = 0, winSize = 1024, hopSize = 256, fftSize = 1024, maFFTSize = 16384;
+		^this.multiNew('audio', in.asAudioRateInput(this), function, threshold, debounce, filterSize, frameDelta, winSize, hopSize, fftSize, maFFTSize)
+	}
+}
diff --git a/release-packaging/Classes/FluidSpectralShape.sc b/release-packaging/Classes/FluidSpectralShape.sc
new file mode 100644
index 0000000..6540709
--- /dev/null
+++ b/release-packaging/Classes/FluidSpectralShape.sc
@@ -0,0 +1,18 @@
+FluidSpectralShape : MultiOutUGen {
+
+	*kr { arg in = 0, winSize = 1024, hopSize = 512, fftSize = -1, maxFFTSize = 16384;
+		^this.multiNew('control', in, winSize, hopSize, fftSize, maxFFTSize);
+	}
+
+	init {arg ...theInputs;
+		inputs = theInputs;
+		^this.initOutputs(7,rate);
+	}
+
+	checkInputs {
+		if (inputs.at(0).rate != 'audio', {
+			^(" input 0 is not audio rate");
+		});
+		^this.checkValidInputs;
+	}
+}
diff --git a/src/FluidBufOnsetSlice/FluidBufOnsetSlice.cpp b/src/FluidBufOnsetSlice/FluidBufOnsetSlice.cpp
new file mode 100644
index 0000000..aa2b3d3
--- /dev/null
+++ b/src/FluidBufOnsetSlice/FluidBufOnsetSlice.cpp
@@ -0,0 +1,14 @@
+
+// A tool from the FluCoMa project, funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 725899)
+
+#include <clients/rt/OnsetSlice.hpp>
+#include <clients/nrt/FluidNRTClientWrapper.hpp>
+#include <FluidSCWrapper.hpp>
+
+static InterfaceTable *ft;
+
+PluginLoad(OfflineFluidDecompositionUGens) {
+  ft = inTable;
+  using namespace fluid::client;
+  makeSCWrapper<NRTOnsetSlice>("BufOnsetSlice", ft);
+}
diff --git a/src/FluidOnsetSlice/FluidOnsetSlice.cpp b/src/FluidOnsetSlice/FluidOnsetSlice.cpp
new file mode 100644
index 0000000..f60f7a0
--- /dev/null
+++ b/src/FluidOnsetSlice/FluidOnsetSlice.cpp
@@ -0,0 +1,13 @@
+
+// A tool from the FluCoMa project, funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 725899)
+
+#include <clients/rt/OnsetSlice.hpp>
+#include <FluidSCWrapper.hpp>
+
+static InterfaceTable *ft;
+
+PluginLoad(FluidSTFTUGen) {
+  ft = inTable;
+  using namespace fluid::client;
+  makeSCWrapper<OnsetSlice>("FluidOnsetSlice", ft);
+}
diff --git a/src/FluidSpectralShape/FluidSpectralShape.cpp b/src/FluidSpectralShape/FluidSpectralShape.cpp
new file mode 100644
index 0000000..6668f16
--- /dev/null
+++ b/src/FluidSpectralShape/FluidSpectralShape.cpp
@@ -0,0 +1,13 @@
+
+// A tool from the FluCoMa project, funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 725899)
+
+#include <clients/rt/SpectralShapeClient.hpp>
+#include <FluidSCWrapper.hpp>
+
+static InterfaceTable *ft;
+
+PluginLoad(FluidSTFTUGen) {
+  ft = inTable;
+  using namespace fluid::client;
+  makeSCWrapper<SpectralShapeClient>("FluidSpectralShape", ft);
+}