▁features ▁an ▁earth y ▁color ▁p alette ▁and ▁Train or ▁dan cing ▁at op ▁a ▁group ▁of ▁people ▁that ▁rock ▁around ▁her ▁like ▁waves . ▁Train or ▁has ▁performed ▁the ▁song ▁on ▁The ▁Ellen ▁De Gener es ▁Show ▁and ▁The ▁Vo ice . ▁ ▁Background ▁and ▁release ▁Meg han ▁Train or ▁delayed ▁her ▁August ▁ 2 0 1 8 - sch eduled ▁third ▁major - label ▁studio ▁album , ▁Tre at ▁Mys elf , ▁to ▁January ▁ 2 5 , ▁ 2 0 1 9 , ▁because ▁she ▁wanted ▁to ▁add ▁more ▁songs ▁to ▁it , ▁and ▁removed ▁it ▁from ▁i T unes ▁that ▁month . ▁Train or ▁had ▁written ▁" W ave " ▁in ▁ 2 0 1 6 , ▁and ▁held ▁onto ▁it ▁until ▁ 2 0 1 9 . ▁She ▁approached ▁Mike ▁Sab ath ▁to ▁produce ▁the ▁song . ▁As ▁the ▁two ▁became ▁close ▁while ▁working ▁on ▁it ▁in ▁the ▁studio , ▁Train or ▁asked ▁him ▁to ▁record ▁a ▁verse ▁for ▁the ▁song . ▁Sab ath ▁stated ▁that ▁he ▁was ▁" super ▁inspired " ▁by ▁her ▁voice ▁and ▁the ▁energy ▁of ▁the ▁people ▁in ▁the ▁studio , ▁and ▁finished ▁his ▁verse ▁in ▁one ▁take ▁and ▁filled ▁in ▁the ▁lyr ics , ▁con cluding ▁the ▁recording ▁of ▁the ▁song ▁on ▁March ▁ 5 , ▁ 2 0 1 9 . ▁Sab ath ▁went ▁on ▁to ▁produce ▁five ▁of ▁the ▁fifteen ▁tracks ▁from ▁the ▁album , ▁co - writing ▁four ▁of ▁them . ▁ ▁About ▁the ▁insp iration ▁for ▁" W ave