I simply read the notes too slow, so I cant play anything fluidly, and besides I feel as if there is something seriously wrong with the notes, as if I'm not playing the right ones (even though I AM playing the indicated notes, since my keyboard has a sheet display) because it sounds nothing like the song i'm trying to play.Right now, I'm trying to play this songI dont know what these symbols meanAnd as soon as I reach the part in red...the song just stops sounding like it should, so I suppose it must be something very important.