▁( J eff ▁Kin z bach ▁and ▁Ed ▁Fer enc ) ▁were ▁already ▁hosting . ▁ ▁Kin z bach ▁and ▁Fer enc ▁had ▁already ▁been ▁a ▁morning ▁team ▁– ▁with ▁side k icks ▁– ▁since ▁ 1 9 7 6 , ▁seven ▁years ▁prior ▁to ▁adopt ing ▁the ▁" mor ning ▁zoo " ▁label , ▁so ▁the ▁basic ▁structure ▁was ▁already ▁in ▁place . ▁ ▁The ▁music ▁structure ▁also ▁was ▁modified ▁at ▁this ▁time ▁as ▁artists ▁such ▁as ▁Michael ▁Jackson , ▁Madonna ▁and ▁Prince ▁soon ▁found ▁air play ▁on ▁WM MS . ▁ ▁The ▁change ▁was ▁done ▁for ▁many ▁reasons : ▁as ▁a ▁nod ▁to ▁the ▁sudden ▁influence ▁Z 1 0 0 ' s ▁format ▁had ▁on ▁the ▁Mal rite ▁group ; ▁G orm an ▁and ▁Sand ers ▁intention ▁to ▁stay ▁with ▁the ▁current ▁music ▁tr ends ▁as ▁the ▁album - orient ed ▁rock ▁( A OR ) ▁format ▁was , ▁even ▁then , ▁in ▁a ▁state ▁of ▁decl ine ; ▁and ▁as ▁a ▁means ▁to ▁attract ▁a ▁female ▁audience . ▁ ▁By ▁ 1 9 8 4 , ▁the ▁WM MS ▁format ▁moved ▁to ▁an ▁CH R / A OR ▁hy brid , ▁playing ▁a ▁great ▁deal ▁of ▁Top ▁ 4 0 ▁rock ▁singles ▁in ▁hot ▁rotation ▁mixed ▁with ▁album ▁cut s ; ▁this ▁new ▁bl ended ▁rock / Top ▁ 4 0 ▁format ▁was ▁soon ▁known ▁by ▁those ▁at ▁the ▁station ▁as ▁Rock ▁Fort y . ▁ ▁The ▁station ▁also ▁started ▁to ▁dev ote ▁week end ▁programming ▁to ▁the ▁classic ▁rock