I made it a habit that upbeat songs (including rock) will be during weekdays and saturdays then I'll left Sunday for ballad day. But ever since the rainy days have come, this SOP hasn't been followed recently. And look what I am listening to right now? Ai no Uta? Of course, just by looking at it's title, you can depict that it's a ballad since it means either "Song of Love" or "Poem of Love" depending on what kanji was used but either way, it's still ballad.