To view the specific songs that were trending during those weeks, you can use the KKBOX Music Chart (Taiwan) and adjust the date filter to the following ranges:
You can manually select these dates on the official KKBOX Chart Archive to see the full list of 50 new singles per week. Alternative Streaming Access
A comprehensive KKBOX Mandarin New Singles Weekly Chart playlist tracks these weekly updates from 2017 to the present. To view the specific songs that were trending
For the highest quality and legal offline listening, the KKBOX App allows subscribers to download tracks for offline use directly within their platform. 華語新歌週榜 - KKBOX 風雲榜
Search for "2021 KKBOX 華語新歌週榜" to find user-uploaded mixes and weekly countdown playlists that feature the top 100 songs from 2021. 華語新歌週榜 - KKBOX 風雲榜 Search for "2021 KKBOX
Top tracks typically included artists like G.E.M. Tang (鄧紫棋) with "Parallel" and OSN (高爾宣) .
If you want to listen to these collections in one place, third-party users often curate these charts into playlists on other platforms: If you want to listen to these collections
However, you can access the specific rankings and official streaming playlists for that period (Week 15 to Week 21 of 2021) through the following resources: