Here is a song that I heard ringing one day in my school, as I walked down the deserted hallways, feeling badly about things. I followed the melody until I reached my auditorium, where I found, alone, sitting, one of my friends playing it on the master piano. I stared, mezmorized, at him, listening, dreamily to his tune, as he pressed the simple combination of keys down onto his instrument, creating, deeply, a light in the dark of things.
YouTube - Billy Joel - nocturne
This is song may not mean anything to you, but I sure hold it deep to my heart, for it really lightened my day, and always will when I hear it's peaceful, mellow tune. I hope you can relate, because it is really a amazing what an awesome feeling that simple songs can bring to you.
And also, another Piano piece, which is my all time favorite:
YouTube - Doug Hammer - "Sunrise" (Piano)