What exactly was the “wall of sound” technique and why was it so important for music?

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I read the wikipedia page on it and im still confused on how it is made and what exactly was so good about it. Im not familiar with music production but ive seen people mention Spector and how he contributed to music and the “wall of sound” is always something i see people mention. But i never know what exactly that is

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Anonymous 0 Comments

Some responses here have mentioned using multiple instruments playing the same parts, and recording at high gain levels to near-distortion to achieve high saturation; and both are absolutely accurate descriptions—but I think the key to understanding the Wall of Sound is grasping how these two techniques interact. Since this is an ELI5, I’m going to generalize, so please don’t take the following as a hardcore technical description. It is not. I’m just trying to explain the overall concept.

It works kinda like this: Imagine you’re recording 10 parts (3 voices, 3 guitars, 1 bass, 2 drum kits, and 1 piano.) Instead of recording each one at 10% of the available headroom and layering them to achieve 100% fullness, you record each one at 100% fullness and use a series of audio equipment to let more of one track through as another gets softer. If all 10 tracks are in the mix, the equipment pulls each one down to 10% of its fullness. If 5 are in, they’re each pulled down to 20%. If 2 are in, they’re each going to be 50%. No matter how many instruments are in the mix, the overall fullness stays at 100%.

Now imagine you’re not just recording 10 instruments, but 30 or 50 and they’re all pumping in and out against each other at very high speeds. And that piano part isn’t just on the piano. Instead, half the horn section and half the string section are also playing the melody while the other halves are playing the chords. Eventually you can’t tell the difference between piano, strings, and horns. *And* the overall sound is staying at 100% the whole time. That’s basically the concept behind the Wall of Sound. Today we call it “Shoegaze.”

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