, ▁Justin ▁Car uso ▁and ▁Ark adi . ▁ ▁Com position ▁An ▁elect rop op ▁and ▁house ▁song , ▁According ▁to ▁D ani ▁Bl um ▁of ▁P itch f ork , ▁" W ave " ▁begins ▁with ▁Train or ▁deliver ing ▁" t itan ic ▁vocals ▁over ▁a ▁pan or am ic ▁piano " ▁instrument ation , ▁which ▁trans itions ▁into ▁an ▁electronic ▁dance ▁music ▁pul se ▁that ▁was ▁compared ▁to ▁the ▁work ▁of ▁C asc ada . ▁The ▁song ▁features ▁" ost ent ati ous " ▁background ▁vocals ▁with ▁g ospel - inf lect ed ▁harm on ies ▁that ▁she ▁stated ▁were ▁inspired ▁by ▁her ▁vis its ▁to ▁K any e ▁West ' s ▁Sunday ▁Service ▁Ch oir ▁shows . ▁Descri bed ▁as ▁a ▁" f ro thy ▁electro - b op ", ▁its ▁lyr ics ▁detail ▁the ▁high s ▁and ▁l ows ▁of ▁a ▁dram atic ▁love ▁story . ▁" W ave " ▁tal ks ▁about ▁the ▁emot ional ▁fall out ▁of ▁a ▁relationship ▁that ▁has ▁failed , ▁with ▁lyr ics ▁like ▁" And ▁I ▁shouldn ' t ▁beg ▁for ▁more / But ▁I ▁don ' t ▁want ▁it ▁to ▁end ". ▁It ▁has ▁been ▁called ▁a ▁dr astic ▁departure ▁from ▁Train or ' s ▁traditional ▁do o - w op ▁sound ▁by ▁Pop Mat ters ▁Jess ica ▁Br ant . ▁ ▁Crit ical ▁reception ▁The ▁song ▁received ▁mixed ▁reviews ▁from ▁music ▁critics . ▁Id ol ator ' s ▁Mike ▁Nied ▁wrote ▁that ▁" W ave " ▁finds ▁" the ▁du