Eric Whitacre's Composing Game

In his brief video with JWPepper (https://www.youtube.com/watch?v=lpnQNOe9LJ8) Eric Whitacre comes up with a nice little idea:

Composing a piece that follows these rules:

• no longer than 60 seconds
• using only 4 notes (in every octave, I think)
• written in less than a day
• having something to say 

Have a nice time! :D

My submission, a short piece for String Ensemble based on D flat - D - G - B flat (and their enharmonic equivalents)

I will defiantly take a stab at this sounds fun! We can use 4 notes and there harmonic equivalents..... So lets say I choose A, C, D and E, could I use double flats/double sharps/sharps/flats depending on the key signature.

For Example: Key of D Major, 1 sharp: Regular Notes: A, C, D, and E. Enharmonic Equals: G double sharp, B sharp, C double sharp, and D double sharp?

Composed in fifteen minutes.

I don't have anything to say with that though.