Foundations of Music (FoM)
Music theory textbook focusing on perception and dynamic systems rather than rules.

Clickable cards map kick patterns, tempo bands, bass types, leads, mood and texture into 21 base genres and 47 hybrids — a tidy way to treat genre as the intersection of production choices. It’s more of a creative prompt than an analytic product (there’s no audio ingestion, sharing, or export), but it’s useful for brainstorming track direction and naming ideas.
Electronic music producers, DJs, sound designers, and music enthusiasts
Music theory textbook focusing on perception and dynamic systems rather than rules.
Polished music theory app in a category with Hooktheory and musictheory.net.
60 years of metal data with regional breakdowns, but it's a visualization site without downloadable datasets or API.
Reframes pitch as just rhythm sped up beyond human temporal resolution.
Floating widget UI for live music lessons when DAWs are too complex for teaching.
Multi-instrument harmony explorer with complexity toggles from basic to experimental.