The melody of City Of Stars by Ryan Gosling & Emma Stone runs 186 notes across 46 bars, 2:17 long in Gm at 104 beats per minute. The tab sits almost entirely in the first two frets, one note at a time — no chords to barre and no strumming pattern to keep up with. A piano backing track plays the chords and bass underneath, so the line you are learning sounds like the record even at half speed.
Prefer to strum and sing it instead? City Of Stars chords and lyrics.