change prompt building

app.py

@@ -38,7 +38,7 @@ class AudioPalette:
         if instrument is None:
             prompt = f"A soundtrack for {generated_text} with {self.pace_map[pace]} beats per minute. High quality."
         else:
-            prompt = f"A soundtrack for {generated_text} with {self.pace_map[pace]} beats per minute with a {instrument}. High quality."
+            prompt = f"A {instrument} soundtrack for {generated_text} with {self.pace_map[pace]} beats per minute. High quality."
         
         print("Generated Prompt:", prompt)