Clear explanations of how audio actually works — AI vocal separation, sample rates, the pitch/tempo/duration relationship, file formats, beatmatching, and the concepts behind the tools you use every day.
Formants explained: the vocal-tract resonances that shape vowels and voice identity, and why a pitch changer can make singers sound like chipmunks.
Semitones and cents explained: what each unit measures, the math behind them, and how to use a pitch changer to move a song up or down by semitones.
Concert pitch explained: why A440 is the standard, what 442 Hz and 432 Hz tuning mean in cents, and what a pitch changer can and can't fix.
Key finder says A minor but the song feels like C major? Here is why key detection goes wrong and how to check, fix, and confirm the real key by ear.
Major vs minor key explained: the third, the scale steps, and the sound. Learn to hear the difference and read what a key finder tells you about mode.
Key signatures explained: the order of sharps and flats, quick tricks to read the key, and how a key finder result like E minor maps to the staff.