What does this day mean and which El Paso record store(s) will participate?

If it wasn't for record stores, you never would have bought your favorite album! (Metallica, Iron Maiden, Meatloaf...etc.)
This year it's Sat, April 16!
Learn more here and find out who in El Paso will participate!
Also, at which El Paso record store location did you buy YOUR favorite album and who was it?