Folk, soul, rock, MPB, trot, and singer-songwriters in a radio-and-record culture.
Read the 1970s guideRead before you listen
Global Music Archive
This is the editorial center of Music Time Machine. It connects six decade guides, four regional histories, two source-reviewed field notes, the comparison method, playback standards, and dated corrections. The player opens six audited windows; these pages explain the evidence, meaning, and limits behind them.
What makes this an archive
The project does not reproduce a chart, scrape a streaming catalog, or treat an embedded video as original editorial work. Its contribution is the listening framework around those videos: a fixed year range, four deliberately different regions, contextual essays, cross-region comparison, and a public, source-backed correction process.
The four regions are not intended to stand in for the whole world. They were chosen because they offer contrasting languages, recording industries, broadcast histories, and paths into digital music. Korea shows the long route from postwar popular song to K-pop. The US and UK provide an influential but not universal reference point. Japan demonstrates the strength of a large domestic market. Brazil keeps Portuguese-language popular music and a different rhythmic history inside the comparison.
6 verified windowsThe player opens 1974, 1984, 1994, 2004, 2014, and 2022. The decade guides—not playback—cover 1970 through 2022.
4 regionsKorea, US/UK, Japan, and Brazil are compared without forcing one shared chart.
24 documented tracksEvery playable entry has a dated release or window-event field, a reproducible source, and an original regional listening note.
Featured source review
Twenty recordings, five windows, four regions
The field guide documents the 1974, 1994, 2004, 2014, and 2022 windows track by track. It distinguishes fact from interpretation, cites official or authoritative evidence, and makes two intentional release/window exceptions explicit.
Read by decade
Decade guides are the main historical layer of the archive. Each one identifies changes in production, distribution, performance, and audience habits, then asks how those changes appeared differently in the four regions. They are not summaries generated from the year pages; each guide has its own argument and recommended listening route.
Television, synthesizers, cassettes, arena scale, city pop, ballads, and local rock.
Read the 1980s guideHip-hop, alternative rock, dance music, J-pop, Brazilian hybrids, and first-generation K-pop.
Read the 1990s guideCD culture gives way to downloads, portals, online video, compressed audio, and faster global circulation.
Read the 2000s guideStreaming, social video, fandom coordination, playlists, and globally visible local scenes.
Read the 2010s guideShort-form discovery, genre fluidity, catalog revivals, and the challenge of judging recent work.
Read the 2020s guideRead by listening region
A region guide is the best starting point when local genre names, industry history, or language context matters more than a global comparison. Each guide is written for that region rather than being a mechanically translated copy of the same page.
포크, 트로트, 록, 발라드, 댄스 음악과 K-pop의 연결을 한국어로 설명합니다.
한국 가이드 읽기An English-language guide to the changing mainstream from soul and album rock to hip-hop and streaming pop.
Read the US/UK guide歌謡曲、フォーク、シティポップ、バンド、アイドル、アニメ関連音楽の流れを日本語でたどります。
日本ガイドを読むUm guia em português sobre MPB, samba, rock brasileiro, sertanejo, funk e pop contemporâneo.
Ler o guia do BrasilHow to use the verified windows
Choose one of the six reviewed years in the player, read the four-region comparison and track evidence, then use the matching decade guide for broader historical context. Selecting another year gives a transparent review-pending message instead of substituting a nearby recording.
- Compare Korean folk, British studio pop, Japanese new music, and an MPB duet recording.
- Listen for the different roles of television, studio polish, ballads, rock, and urban pop.
- Move from intimate Korean folk-rock and Britpop to CD-era J-pop and Recife manguebeat.
- Hear four different hook-building strategies at the hinge between physical and digital listening.
- Compare local routes into digital markets and inspect the disclosed Brazilian carry-over.
- Compare platform-era travel while keeping release dates and breakthrough dates separate.
Read the 1974 evidence guideRead the 1984 evidence guideRead the 1994 evidence guideRead the 2004 evidence guideRead the 2014 evidence guideRead the 2022 evidence guide
Each evidence guide links to the exact four-region player state after presenting the release record, source, and editorial interpretation in crawlable HTML.
Methods, standards, and accountability
Why the archive compares regions, what a representative selection can and cannot prove, and how to avoid treating one market as the world.
Read the methodPreferred sources, replacement rules, regional blocks, rights-holder control, and the archive's reporting workflow.
Read playback standardsSelection principles, conflicts, correction requests, commercial independence, and limitations.
Read the policyDated notes showing what changed and why, including track-level date evidence, its source type, and removed video conflicts.
Read corrections and update notes