: The most famous collaboration for the BSS unit is "Fighting (feat. Lee Young-ji)" , which became a massive "cheer-up" anthem globally.
: Their "FOLLOW AGAIN" tour featured Ultra 4DX and ScreenX cinema releases, providing a 270-degree viewing experience. 🏛️ The "17" Formula
It also appears in social media counts, such as the or likes often seen on their viral performance clips. 🎤 Key Features of Seventeen's Music Seventeen 301
: They originally planned for 17 members, but 4 trainees left before debut.
signifying they are "Number 1" or their status as the first official sub-unit. : The most famous collaboration for the BSS
If you are looking for specific "features" (collaborations) or characteristics of their 2024–2026 era:
: Their 5th Studio Album, HAPPY BURSTDAY (released May 2025), features 13 solo tracks—one for every member—showcasing their individual "proper" musical styles. 🏛️ The "17" Formula It also appears in
If you're referring to a technical "Feature 301" (like a software redirect or a specific product model), please specify the industry, as is also the name of a popular Netlify redirect domain service ( seventeencups.net ). If you'd like, I can: Give you the tracklist for the BSS sub-unit.