Jewelry · Single · 2011
A 2011 digital single. A comeback work built around “Back It Up”, with an instrumental alongside. It records Jewelry in the stretch when they moved toward streaming, a move within their later catalogue.

Release format, tracks, chronology and official videos.
Jewelry’s “Back It Up” is a Single released on 2011-01-27 for Korea / global. Release 13 of 22 in the same market, following “End And.. (Repackage)” by 406 days. 2 tracks; title track: Back It Up; total duration: 7:08. Genre: K-Pop. Label: STAR EMPIRE,under license to Kakao Entertainment. 2 official videos (MV: 1, Music Core: 1); digital only.
All 2 tracks, with durations, title tracks, writing credits and official videos.
| # | Track | Duration | Credits | Videos |
|---|---|---|---|---|
| 1 | Back It UpTitle track | 3:34 | Not confirmed | Show! Music Core ▸ (Japanese) |
| 2 | Back It Up (Instrumental) | 3:34 | Not confirmed | — |
Music videos, dance practices and performances for these tracks
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