Tokøta, presenting for Mastering.com, breaks down how virtual instruments work in Logic Pro. A synth interface stays silent until it's triggered by MIDI data, whether from a keyboard or programmed notes.
For beginners, the fastest way in is flipping through presets in the Library until something sparks an idea for your track. No need to understand every parameter first.
Alchemy gets used as an example of just how much range a single instrument can hold, with wildly different tones and textures packed into its preset browser. Combine that preset-hunting with MIDI programming basics like velocity and quantization to start shaping a sound that's actually yours.