diff --git a/docs/BLE_MIDI_Spec.md b/docs/BLE_MIDI_Spec.md
new file mode 100644
index 0000000..a31f359
--- /dev/null
+++ b/docs/BLE_MIDI_Spec.md
@@ -0,0 +1 @@
+https://www.midi.org/specifications-old/item/bluetooth-le-midi