Mostly Harmless – Tighten Up (The Black Keys Cover) Feb 2, 2017 Brother, Brothers, Cover Black, Cover Black Keys, Cover Blues-Rock, Cover Rock, Cover Tighten Up, A cover off The Black Keys‘ album „Brothers“. Like 0 Thanks! You've already liked this « Mostly Harmless- Linoleum (NOFX) cover » Mostly Harmless plus one – Time Of Your Life (Green Day cover)