The song Silence, a song written by producer KF Marshmello, features singer-songwritter who's best known for which debut single? 
Silence (Marshmello song): "Silence" is a song by electronic dance music producer and DJ Marshmello, featuring American singer-songwriter Khalid. Khalid (singer): Khalid Legend Robinson (born February 11, 1998), known mononymously as Khalid, is an American singer and songwriter. Khalid (singer):  He is signed to Right Hand Music Group and RCA Records. Khalid (singer):  He is best known for his debut single, "Location", which peaked at number 16 on the US "Billboard" Hot 100 and was certified platinum.
"Location"