what jhumka song

"What Jhumka?" is a song from the movie "Rocky Aur Rani Kii Prem Kahaani" starring Ranveer Singh and Alia Bhatt. The song is sung by Arijit Singh and Jonita Gandhi, with rap performed by Ranveer Singh. The music is composed by Madan Mohan and Pritam, with lyrics and rap by Amitabh Bhattacharya and original lyrics by Raja Mehdi Ali Khan. The song is described as the biggest dance number of the season.