Touhou Otomebayashi 東方乙女囃子

Denpa is a hyper-cute, deliberately "weird" branch of Japanese pop associated with Akihabara otaku culture, eroge/visual novel theme songs, and doujin circles. Its name comes from denpa-kei ("radio-wave type"), a tongue‑in‑cheek label implying a brain‑melting, nonsensical, or deliriously catchy quality. Musically, denpa blends sugary idol-style melodies, high-pitched vocals, and toy-like synth timbres with chiptune bleeps, game sound effects, and rapid-fire call‑and‑response hooks. Lyrics lean into surreal wordplay, onomatopoeia, otaku in-jokes, and cute character personas. Arrangements are maximalist and colorful, often with sudden modulation “key-ups,” dense countermelodies, and an anime‑OP sense of instant memorability.

Touhou is a fan-driven music ecosystem that centers on the melodic boss themes and stage pieces from the Touhou Project games by ZUN (Team Shanghai Alice), and the vast culture of doujin (independent) arrangements derived from them. While the original soundtracks draw on jazzy harmonies, ear‑catching melodies, and fast, arcade‑ready pacing, the broader “Touhou” tag usually denotes the enormous body of remixes that reimagine these themes as rock/metal, trance, eurobeat, denpa, jazz, orchestral, and more. Character leitmotifs, brisk BPMs, bright “ZUN‑pet” synth/brass timbres, and dramatic modulations are common fingerprints. The style is deeply tied to Japanese doujin culture, with circles releasing CDs at events like Comiket and Reitaisai and sharing on platforms such as Niconico Douga and YouTube, where meme‑driven hits (e.g., eurobeat or denpa takes) helped globalize the sound.

Rock is a broad family of popular music centered on amplified instruments, a strong backbeat, and song forms that foreground riffs, choruses, and anthemic hooks. Emerging from mid‑20th‑century American styles like rhythm & blues, country, and gospel-inflected rock and roll, rock quickly expanded in scope—absorbing folk, blues, and psychedelic ideas—while shaping global youth culture. Core sonic markers include electric guitar (often overdriven), electric bass, drum kit emphasizing beats 2 and 4, and emotive lead vocals. Rock songs commonly use verse–chorus structures, blues-derived harmony, and memorable melodic motifs, ranging from intimate ballads to high‑energy, stadium‑sized performances.

Electronic is a broad umbrella genre defined by the primary use of electronically generated or electronically processed sound. It encompasses music made with synthesizers, drum machines, samplers, computers, and studio/tape techniques, as well as electroacoustic manipulation of recorded or synthetic sources. The genre ranges from academic and experimental traditions to popular and dance-oriented forms. While its sonic palette is rooted in electricity and circuitry, its aesthetics span minimal and textural explorations, structured song forms, and beat-driven club permutations. Electronic emphasizes sound design, timbre, and studio-as-instrument practices as much as melody and harmony.