Global region structure added
Added dedicated region guides for Korea, the US/UK, Japan, and Brazil. Rewrote the archive as a global hub so the content matches the region selector in the player.
Curation Journal
This journal explains how Music Time Machine maintains a global archive across KR, US, JP, and BR. It exists so visitors can see that the site is a managed music discovery project, not a collection of empty pages or copied embeds.
Why This Journal Exists
Music Time Machine does not host audio files. The site connects official YouTube embeds with year-based navigation, region switching, and editorial context. Because embedded music can be mistaken for low-value copied content, the site makes its curation process visible.
Every region is treated as a first-class listening path. Korea, the US/UK, Japan, and Brazil each have different music histories, languages, and memories. The goal is not to force them into one global chart, but to let visitors compare the same year across different pop cultures.
Update Log
Decade and year archive expanded
Added decade guides from the 1970s through the 2020s and year pages from 1970 to 2025. The pages explain the listening context instead of only listing videos.
Policy and trust pages organized
Updated the About, Music Guide, Editorial Policy, Contact, Terms, and Privacy Policy pages so visitors can understand the site purpose, data handling, YouTube embed usage, and correction process.
Correction Rules
- If a video stops playing, the preferred replacement is an official music video, official audio, artist channel, or label upload.
- If release year and cultural memory differ, the song may appear near the year where listeners most strongly associate it.
- If one region becomes too narrow, the archive prioritizes songs that explain a broader period or genre movement.
- User reports are reviewed by year, region, artist, title, and playback availability before changes are made.
Regional Language Approach
The main archive is written in English because it is the shared language for global visitors. Region pages include local-language signals where useful: Korean for KR, Japanese for JP, and Portuguese for BR. The player itself keeps the simple KR / US / JP / BR switcher so visitors can change the listening region immediately.
Known Limitations
This is not an academic music encyclopedia and it does not claim to provide a definitive chart history. It is a curated listening map. Recent years can change as songs age, and YouTube videos may become unavailable because rights holders control embedding and availability.