diff --git a/README.md b/README.md
index 2ca3ecf..d020c36 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Load an audio file, slice it into regions (automatically via onset detection or
 
 ## Features
 
-- **Slice & trigger** -- Load WAV, AIFF, FLAC, or OGG files and play slices chromatically via MIDI (starting at C3)
+- **Slice & trigger** -- Load WAV, AIFF, FLAC, or OGG files and play slices chromatically via MIDI (starting at C4)
 - **Auto-slice** -- Onset-based detection with adjustable sensitivity
 - **Manual slice control** -- Click to add, right-click to remove, drag to reposition slice markers
 - **Per-voice envelopes** -- Amplitude and filter ADSR envelopes with configurable depth
@@ -58,7 +58,7 @@ make clean
 
 1. Load an audio file via the **Load** button, drag-and-drop, or the **<** / **>** buttons to browse the current folder
 2. Click **Auto Slice** or manually click on the waveform to place slice markers
-3. Play slices via MIDI -- note C3 triggers slice 0, C#3 triggers slice 1, and so on
+3. Play slices via MIDI -- note C4 triggers slice 0, C#4 triggers slice 1, and so on
 4. Shape the sound with the amp/filter envelopes, filter, and tone controls
 
 ### Waveform Interaction