I did what you said and it worked! I got a flawless too ^^ Thank you for your help. I had no idea when two showed up you only had to hit for the bottom one.
so here's what I learned playing it from the first and second time. first time while waiting I did as instructed, but there were times when hitting the button to show you which one to hit a second one would show up. didn't really think it was correct and maybe a mistake. HOWEVER second time I did instructed, followed note, hit the exact button but after that I went and clicked on the button to see if a second note would appear [idk if it shows it automatically or you have to press it in order to revealed]. my first play got me passable but the second time with checking for those second notes got me flawless. hope that helps and is understandable ftg
I did it for each and single one because best to be cautious. so when it shows you the first note to click that note you go click it and then go back up to click the original note to click it. because in my first playthrough I thought it was accidental since once I realized there was a second note when clicked I was hurled to the next note. timing is important as it won't spare you if you take to long when looking back at my first go