Pasek and Paul are a duo that won an Academy Award for the song that was performed by whom in La La Land?
Pasek and Paul:  Their original songs have been featured on NBC's "Smash", and in the film "La La Land", for which they won both the Golden Globe and Academy Award for Best Original Song for the song "City of Stars". City of Stars: "City of Stars" is a song performed by Ryan Gosling and Emma Stone from the film "La La Land" (2016).
Ryan Gosling