ES Idol Song Season 1: UNDEAD

'Ensemble Stars!! idol song season1 UNDEAD' is a single released by UNDEAD. It includes one new unit song featured in the Howl! Nightless City That Burns the Soul event and an UNDEAD arrangement of BRAND NEW STARS!!.

Track Listing
- Lyrics: Yohei Matsui (松井洋平) - Composition/Arrangement: Masamichi Nagai (永井正道) - Lyrics: Saori Codama (こだま さおり) - Composition: Satoru Kuwabara (桑原 聖) - Arte Refact - Arrangement: Masatomi Waki (脇 眞富) - Arte Refact
 * 1) Nightless World [[File:Nightless World Sample.ogg]]
 * 1) BRAND NEW STARS!! (UNDEAD ver.) [[File:BRAND NEW STARS!! (UNDEAD Ver.) Sample.ogg]]
 * 1) Nightless World (Instrumental)