diff --git a/demos/PlotLFO.cpp b/demos/PlotLFO.cpp
index 61ca0371..6f77f2f5 100644
--- a/demos/PlotLFO.cpp
+++ b/demos/PlotLFO.cpp
@@ -114,7 +114,8 @@ int main(int argc, char* argv[])
     std::vector<std::unique_ptr<sfz::LFO>> lfos(numLfos);
 
     for (size_t l = 0; l < numLfos; ++l) {
-        sfz::LFO* lfo = new sfz::LFO(bufferPool);
+        const NumericId<sfz::LFO> id { static_cast<int>(l) };
+        sfz::LFO* lfo = new sfz::LFO(id, bufferPool);
         lfos[l].reset(lfo);
         lfo->setSampleRate(sampleRate);
         lfo->configure(&desc[l]);
diff --git a/src/sfizz/LFO.cpp b/src/sfizz/LFO.cpp
index 6dd5c168..353ab899 100644
--- a/src/sfizz/LFO.cpp
+++ b/src/sfizz/LFO.cpp
@@ -18,14 +18,16 @@
 namespace sfz {
 
 struct LFO::Impl {
-    explicit Impl(BufferPool& bufferPool, BeatClock* beatClock)
-        : bufferPool_(bufferPool),
+    explicit Impl(NumericId<LFO> id, BufferPool& bufferPool, BeatClock* beatClock)
+        : id_(id),
+          bufferPool_(bufferPool),
           beatClock_(beatClock),
           sampleRate_(config::defaultSampleRate),
           desc_(&LFODescription::getDefault())
     {
     }
 
+    NumericId<LFO> id_;
     BufferPool& bufferPool_;
     BeatClock* beatClock_ = nullptr;
     float sampleRate_ = 0;
@@ -41,8 +43,8 @@ struct LFO::Impl {
     std::array<int, config::maxLFOSubs> sampleHoldState_ {{}};
 };
 
-LFO::LFO(BufferPool& bufferPool, BeatClock* beatClock)
-    : impl_(new Impl(bufferPool, beatClock))
+LFO::LFO(NumericId<LFO> id, BufferPool& bufferPool, BeatClock* beatClock)
+    : impl_(new Impl(id, bufferPool, beatClock))
 {
 }
 
@@ -50,6 +52,11 @@ LFO::~LFO()
 {
 }
 
+NumericId<LFO> LFO::getId() const noexcept
+{
+    return impl_->id_;
+}
+
 void LFO::setSampleRate(double sampleRate)
 {
     impl_->sampleRate_ = sampleRate;
diff --git a/src/sfizz/LFO.h b/src/sfizz/LFO.h
index 1a908932..fecadc8b 100644
--- a/src/sfizz/LFO.h
+++ b/src/sfizz/LFO.h
@@ -5,6 +5,7 @@
 // If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
 
 #pragma once
+#include "utility/NumericId.h"
 #include <absl/types/span.h>
 #include <memory>
 
@@ -52,10 +53,13 @@ struct LFODescription;
 class LFO {
 public:
     explicit LFO(
+        NumericId<LFO> id,
         BufferPool& bufferPool,
         BeatClock* beatClock = nullptr);
     ~LFO();
 
+    NumericId<LFO> getId() const noexcept;
+
     /**
        Sets the sample rate.
      */
diff --git a/src/sfizz/Voice.cpp b/src/sfizz/Voice.cpp
index e3181121..6c25eee8 100644
--- a/src/sfizz/Voice.cpp
+++ b/src/sfizz/Voice.cpp
@@ -1480,7 +1480,8 @@ void Voice::setMaxLFOsPerVoice(size_t numLFOs)
     impl.lfos_.resize(numLFOs);
 
     for (size_t i = 0; i < numLFOs; ++i) {
-        auto lfo = absl::make_unique<LFO>(resources.bufferPool, &resources.beatClock);
+        const NumericId<LFO> id { static_cast<int>(i) };
+        auto lfo = absl::make_unique<LFO>(id, resources.bufferPool, &resources.beatClock);
         lfo->setSampleRate(impl.sampleRate_);
         impl.lfos_[i] = std::move(lfo);
     }
diff --git a/tests/LFOT.cpp b/tests/LFOT.cpp
index e2a625f4..4f2b6a6d 100644
--- a/tests/LFOT.cpp
+++ b/tests/LFOT.cpp
@@ -26,7 +26,8 @@ static bool computeLFO(DataPoints& dp, const fs::path& sfzPath, double sampleRat
     std::vector<std::unique_ptr<sfz::LFO>> lfos(numLfos);
 
     for (size_t l = 0; l < numLfos; ++l) {
-        sfz::LFO* lfo = new sfz::LFO(resources.bufferPool);
+        const NumericId<sfz::LFO> id { static_cast<int>(l) };
+        sfz::LFO* lfo = new sfz::LFO(id, resources.bufferPool);
         lfos[l].reset(lfo);
         lfo->setSampleRate(sampleRate);
         lfo->configure(&desc[l]);