Quibi, the short-form video platform set to launch on April 6, has debuted a trailer for new series “&Music.” Featuring the likes of Ariana Grande, J Balvin, Ozzy Osbourne, Martin Garrix and YG, among others, the series looks at specific aspects of music-making and performance from the point of view of those who work with the stars to create. These “unsung artists” include lighting directors, choreographers, audio engineers and songwriters.