multiple sounds, sound....sucky

im making a small game for learning purposes, you mash a button to explode a bomb, it blows a wall up, when the wall is down you get points for each brick you remove from its original position.

I've added an impact sound to each brick, but it sounds sucky, when a bunch hit at the same time, its a 'wall' of noise. is there a method that solves this, or should I make a load of samples so that its not playing the same one every time a brick impacts?