modify app

app.py

@@ -856,7 +856,7 @@ with gr.Blocks(css=css) as demo:
                     input_video = gr.Video(label="Input Video", max_length=299)
                 with gr.Row():
                     with gr.Row():
-                        input_primer = gr.Textbox(label="Input Primer", value="C Am F G", info="Supported types: dim, sus4, min7(m7), min(m), sus2, aug, dim7, maj6(M6), hdim7, 7, min6(m6), maj7(M7)")
+                        input_primer = gr.Textbox(label="Input Primer", placeholder="(e.g., C Am F G)", value="", info="Supported types: dim, sus4, min7(m7), min(m), sus2, aug, dim7, maj6(M6), hdim7, 7, min6(m6), maj7(M7)")
                         input_key = gr.Dropdown(choices=all_key_names, value="C major", label="Input Key")
                 with gr.Row():
                     btn = gr.Button("Generate")
@@ -866,7 +866,7 @@ with gr.Blocks(css=css) as demo:
                     input_video_yt = gr.Textbox(label="YouTube URL")
                 with gr.Row():
                     with gr.Row():
-                        input_primer_yt = gr.Textbox(label="Input Primer", value="C Am F G", info="Supported types: dim, sus4, min7(m7), min(m), sus2, aug, dim7, maj6(M6), hdim7, 7, min6(m6), maj7(M7)")
+                        input_primer_yt = gr.Textbox(label="Input Primer", placeholder="(e.g., C Am F G)", value="", info="Supported types: dim, sus4, min7(m7), min(m), sus2, aug, dim7, maj6(M6), hdim7, 7, min6(m6), maj7(M7)")
                         input_key_yt = gr.Dropdown(choices=all_key_names, value="C major", label="Input Key")
                 with gr.Row():
                     btn_yt = gr.Button("Generate")