▁Williams , ▁and ▁artists ▁such ▁as ▁B usta ▁Rh ym es , ▁Miss y ▁Elli ott , ▁T LC , ▁Br andy ▁and ▁Dest iny ' s ▁Child . ▁Amy ▁and ▁Nick ▁rock ▁red , ▁blue ▁and ▁green ▁color - co ordin ated ▁out f its ▁and ▁access ories ▁while ▁performing ▁ch ore ograph ed ▁moves . ▁Product s ▁from ▁Co ach , ▁Mer cedes ▁Ben z , ▁O live ▁Garden ▁and ▁United ▁N ude ▁are ▁featured ▁in ▁the ▁video . ▁The ▁video ▁premier ed ▁on ▁Cos m opol itan ' s ▁website ▁July ▁ 1 2 ▁and ▁premier ed ▁on ▁Ve vo ▁July ▁ 1 3 . ▁ ▁The ▁du o ▁said ▁of ▁the ▁concept : ▁“ The ▁video ▁for ▁‘ A cap ella ’ ▁is ▁vis ually ▁something ▁we ’ ve ▁always ▁wanted ▁to ▁put ▁out . ▁Our ▁first ▁few ▁major ▁label ▁videos ▁didn ’ t ▁totally ▁capture ▁who ▁Kar min ▁is , ▁” ▁explains ▁the ▁du o . ▁“ It ▁feels ▁good ▁to ▁create ▁something ▁like ▁this ▁where ▁we ▁are ▁at ▁the ▁hel m ▁and ▁can ▁really ▁be ▁proud ▁of . ▁The ▁video ▁definitely ▁plays ▁hom age ▁to ▁the ▁ 9 0 ' s ▁videos ▁we ▁grew ▁up ▁with ▁and ▁are ▁still ▁inspired ▁by ▁today ." ▁ ▁Cred its ▁and ▁personnel ▁Song writing ▁– ▁Amy ▁He ide mann , ▁Nick ▁No on an , ▁Sam ▁Holland er , ▁Martin ▁Johnson ▁Production ▁– ▁Martin ▁Johnson , ▁additional ▁by ▁K yle ▁Mo orm an ▁and ▁Br andon ▁P add ock ▁Mix ing