In 1979, Kim Ryrie and Peter Vogel released the Fairlight CMI — Computer Musical Instrument. To understand why it mattered, you have to understand what "sampling" meant before it existed: basically nothing.
If you wanted a real instrument's sound in your track, your best option was a Mellotron a keyboard that triggered pre-recorded strips of tape. Clever, but fixed. You couldn't take any sound from the world, capture it, and reshape it. That idea didn't exist yet.
The Fairlight made it exist.
For the first time, you could take a real sound a voice, a smashed bottle, an orchestra digitize it, and then edit it on a screen. And the way you edited it was almost science fiction for 1979: a light pen.
You literally drew and redrew the waveform on a glowing CRT monitor with a pen in your hand. Producers who'd spent their lives splicing tape with a razor blade were suddenly sculpting sound with light.
But here's what most people miss. The Fairlight didn't introduce one breakthrough. It stacked three on top of each other, all at once: