I. Introduction
Red Velvet released its eighth extended play (EP), RBB, on November 30, 2018.
II. Background & Release
The EP featured 6 songs that reflect Red Velvet's unique musical approach: a combination of "red" (primarily bright pop) and "velvet" (more r&b and ballads) songs. This release was entirely "velvet" including the lead single "RBB (Really Bad Boy)." Red Velvet also performed the B-side "Butterflies" on Korean music shows.
III. Tracklist
| Title | Style | Lyrics | Music | Arrangement | Length |
| RBB (Really Bad Boy) | Velvet | Kenzie | Kenzie, Timothy "BOS" Bullock, Sara Forsberg, MZMC | Timothy "BOS" Bullock | 3:08 |
| Butterflies | Velvet | Jo Yoon-kyung | Harvey Mason Jr., Michael "RIOT" Wyckoff, Joshua Golden, Patrick "J. Que" Smith, Dewain Whitmore Jr., Britt Burton, Yoo Young-jin | Harvey Mason Jr., Michael "RIOT" Wyckoff | 3:29 |
| So Good | Velvet | Kim In-hyung | LDN Noise, Deez, Ellen Berg Tollbom (Sunshine) | LDN Noise, Deez, Ellen Berg Tollbom (Sunshine) | 3:26 |
| Sassy Me | Velvet | Kenzie | Kenzie, Jonatan Gusmark (Moonshine), Ludvig Evers (Moonshine), Anne Judith Wik | Moonshine | 3:06 |
| Taste | Velvet | Park Seong-hee, Penomeco | Dem Jointz | Dem Jointz | 3:04 |
| RBB (Really Bad Boy) (English Version) | Velvet | Sara Forsberg | Kenzie, Timothy "BOS" Bullock, Sara Forsberg, MZMC | Timothy "BOS" Bullock | 3:08 |
IV. Spotify Playlist
V. Videos
VI. Concept Photos
VII. Reception
RBB was #1 in 17 countries on iTunes, reflecting a strong and positive international response. It reached #2 on the Billboard World Album Charts and topping the Top Heartseekers Album Chart. In Korea, the EP debuted and peaked at #3 on the Gaon Album chart, making it the group's tenth consecutive top three entry. It also charted in Japan, France and the UK. The lead single "RBB (Really Bad Boy" topped the U.S. Billboard World Digital chart, making it their first time. It became the group's eleventh top ten hit on the Gaon Digital Chart.
