Smashed.

Sales = 1.2M

He's a ****ing DJ, of course it's a solo hit. There's a reason you don't hear instrumentals on the radio.

In the grand scheme of things, generally speaking, when regular people think about the song, they will think about whomever is singing on the track. So in the grand scheme of things, it pretty much is considered Ariana's song solely. However, technically speaking, whomever contributed to the creation of the track, from vocals, to lyrics, production, studio time, record labels, its those people that should get credit for the song, not just Ariana

I consider it both, when im talking about the song I say Ariana's song NOT ariana and zedd's song
but i also consider the song to be a top 10 hit for both the producer and ariana.