A leading note is like when you're playing a game and you're really close to the finish line, but not quite there yet. In music, it's a note that comes right before the last note of a song or a part of a song, and it sounds like it's almost the last note, but it's not quite. This note makes you feel like you're getting ready for something exciting or important that's going to happen next. It's like a little hint or clue that the song is about to end, and it makes you feel like you want to keep listening to find out what happens next.