Tree of Knowledge ～知恵の樹～

FM synthesis is a sound-design–driven electronic style built around frequency modulation techniques, where one oscillator (the modulator) alters the frequency of another (the carrier) to create complex, evolving spectra. The result is famously bright, glassy, and metallic timbres—bell tones, electric pianos, plucks, basses, and inharmonic percussion—that are difficult to achieve with subtractive or wavetable methods. As a musical aesthetic, FM synthesis coalesced around the Yamaha DX series (especially the DX7, 1983) and later 4‑operator units like the TX81Z, spreading through 1980s pop, city pop, new age, jazz fusion, and game music. Its signature presets (e.g., "E. PIANO 1", "Lately Bass") defined the sonic palette of mid‑80s to early‑90s recordings, while FM chips in consoles and arcades shaped the sound of an entire era of video games. Today, FM remains a distinct compositional palette: crystalline highs, punchy transient detail, and harmonically rich but precise tones that can feel both futuristic and nostalgic.