Purely Gorgeous.
I have to say I find this song more then mesmerizing. I love how you used the song of the water droplet to mark out every second beat, It just added a lot to the feel and aura of the song, and also helped it stay true to the title 'A Drop In The Ocean'.
The song felt personally to me like it was gradually and quietly building up from the start, and the moment the piano came in your mind was stolen by the music.
If i had to pick out one thing about this song that I didn't like (other people may and probably have been perfectly fine with it) it was the very end, with the sound of the birds and the gentle waves. The only reason that I didn't like it was that it was merely only for the last few seconds, whereas if used 3/4 through the song throughout to the end it could of possibly had much more of a powerful effect on the listener.
But either way, great work! Keep it up.
Consider it fav'ed.