Update app.py

app.py

@@ -408,7 +408,7 @@ if __name__ == "__main__":
 
         gr.Markdown("## Select custom render options")
 
-        render_with_sustains = gr.Checkbox(label="Render with sustains (if present)", value=False)
+        render_with_sustains = gr.Checkbox(label="Render with sustains (if present)", value=True)
         merge_misaligned_notes = gr.Slider(-1, 127, value=-1, label="Merge misaligned notes")
         custom_render_patch = gr.Slider(-1, 127, value=-1, label="Custom render MIDI patch")