I managed to figure out the function of automations, and now am really struggling with delay or reverb. What I tried to do here was adding delay in the mid of the song especially near the end of piano melodies. From bar 7 to 10, it sounds ok. But the problem is, If I play this song from very beginning, piano melodies keep having delay all the time till bar 7. How do I avoid this?? I need delay sounds only in the mid of the song.