diff --git a/README.md b/README.md
index 84ab158..e74705e 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,9 @@
 - [Workflows](#workflows)
   - [Plot Waveform](#plot-waveform)
 - [Nodes](#nodes)
-  - [I/O](#io)
+  - [Audio Waveforms](#audio-waveforms)
+  - [Spectrograms](#spectrograms)
   - [Filter Banks](#filter-banks)
-  - [Plotting](#plotting)
-  - [Spectrogram](#spectrogram)
 - [License](#license)
 
 > [!NOTE]
@@ -21,11 +20,26 @@
 
 ## Nodes
 
-### I/O
+### Audio Waveforms
 
 | Name                 | Description                                                                         |
 |----------------------|-------------------------------------------------------------------------------------|
 | Load Audio From Path | Same as "Load Audio" but loads from a local path instead of an uploaded audio file. |
+| Plot Waveform        | Plots the waveform of an `AUDIO` object.                                            |
+
+### Spectrograms
+
+| Name                | Description                                                                    |
+|---------------------|--------------------------------------------------------------------------------|
+| Spectrogram         | Computes the spectrogram of a given `AUDIO` object.                            |
+| Inverse Spectrogram | Converts a complex-valued spectrogram to `AUDIO`.                              |
+| Griffin Lim         | Converts a real-valued spectrogram to `AUDIO` using the Griffin-Lim algorithm. |
+| Plot Spectrogram    | Plots the spectrogram of a `SPECT` object.                                     |
+
+A spectrogram (`SPECT`) can be one of three types:
+1. `complex` – a complex number valued spectrogram;
+2. `magnitude` – a real valued spectrogram that is the absolute value of the `complex` spectrogram (power 1);
+3. `power` – a real valued spectrogram that is the square of the `magnitude` spectrogram (power 2);
 
 ### Filter Banks
 
@@ -33,27 +47,7 @@
 |-----------------------|-----------------------------------------------------|
 | Mel-scale Filter Bank | Create a mel-scale filter bank.                     |
 | Apply Filter Bank     | Apply the specified filter bank to the spectrogram. |
-
-### Plotting
-
-| Name                       | Description                                |
-|----------------------------|--------------------------------------------|
-| Plot Waveform              | Plots the waveform of an `AUDIO` object.   |
-| Plot Spectrogram           | Plots the spectrogram of a `SPECT` object. |
-| Plot Filter Bank           | Plots the `FILTER_BANK` object.            |
-
-### Spectrogram
-
-| Name                  | Description                                                                    |
-|-----------------------|--------------------------------------------------------------------------------|
-| Spectrogram           | Computes the spectrogram of a given `AUDIO` object.                            |
-| Inverse Spectrogram   | Converts a complex-valued spectrogram to `AUDIO`.                              |
-| Griffin Lim           | Converts a real-valued spectrogram to `AUDIO` using the Griffin-Lim algorithm. |
-
-A spectrogram (`SPECT`) can be one of three types:
-1. `complex` – a complex number valued spectrogram;
-2. `magnitude` – a real valued spectrogram that is the absolute value of the `complex` spectrogram (power 1);
-3. `power` – a real valued spectrogram that is the square of the `magnitude` spectrogram (power 2);
+| Plot Filter Bank      | Plots the `FILTER_BANK` object.                     |
 
 ## License
 Copyright (C) 2024 Reece H. Dunn
diff --git a/plot_nodes.py b/plot_nodes.py
index 7bd3270..bb564de 100644
--- a/plot_nodes.py
+++ b/plot_nodes.py
@@ -25,7 +25,7 @@ class PlotWaveform:
                              "ylabel": ("STRING", {"default": "Amplitude"}),
                              "show_grid": ("BOOLEAN", {"default": True}),}}
 
-    CATEGORY = "audio processing/plot"
+    CATEGORY = "audio processing"
 
     RETURN_TYPES = ("IMAGE", )
     FUNCTION = "plot"
@@ -58,7 +58,7 @@ class PlotSpectrogram:
                              "ylabel": ("STRING", {"default": "Frequency (Hz)"}),
                              "show_grid": ("BOOLEAN", {"default": False}),}}
 
-    CATEGORY = "audio processing/plot"
+    CATEGORY = "audio processing/spectrogram"
 
     RETURN_TYPES = ("IMAGE", )
     FUNCTION = "plot"
@@ -97,7 +97,7 @@ class PlotFilterBank:
                              "xlabel": ("STRING", {"default": "filter bin"}),
                              "ylabel": ("STRING", {"default": "frequency bin"}),}}
 
-    CATEGORY = "audio processing/plot"
+    CATEGORY = "audio processing/filter bank"
 
     RETURN_TYPES = ("IMAGE", )
     FUNCTION = "plot"