Add waltz to demo (#124)

Author: loubbrad

README.md

@@ -100,15 +100,15 @@ python ./demo/demo_mlx.py \
 A MIDI input device is not strictly required to play around with the demo: By using the `--midi_path` and `--midi_through` arguments you can mock real-time input by playing from a MIDI file. All that is required are MIDI drivers (e.g., CoreMIDI) and a virtual software instrument (e.g., Fluidsynth, Pianoteq) to render the output. In this mode, you can initiate the model takeover by pressing the enter key.
 
 ```bash
-MIDI_PATH="./example-prompts/smooth_jazz.mid"
+MIDI_PATH="./example-prompts/waltz.mid"
 
 python ./demo/demo_mlx.py \
     --checkpoint <checkpoint-path> \
     --midi_path ${MIDI_PATH} \
     --midi_through <midi-playback-port> \
     --midi_out <midi-playback-port> \
     --temp 0.9 \
-    --min_p 0.03
+    --min_p 0.05
 ```
 
 ❗**NOTE**: Responsiveness of the real-time demo is dependent on your system configuration, specifically GPU memory bandwidth. 
@@ -142,4 +142,4 @@ The Aria project has been kindly supported by EleutherAI, Stability AI, as well
   year={2025},
   url={https://arxiv.org/abs/2506.23869}
 }
-```
+```