Gustavo Santaolalla, in case you weren't aware, is the prestigious musician who's now worked on both The Last of Us games with Naughty Dog. It turns out he's not just working behind the scenes for the 2020 sequel though, because you can actually find him in the game itself.
At the very beginning of The Last of Us Part 2, Ellie can take a short stroll around Jackson, the small town run by Tommy and his wife Maria. In the town, you can happen upon the man pictured just below, quietly strumming away peacefully on a banjo (as first uncovered by The Last of Us subreddit).
This character sure does bear a striking resemblance to Gustavo Santaolalla. The Argentinian musician originally worked with Naughty Dog on the original Last of Us back in 2013, and returned to score the sequel seven years later. You can see Santaolalla breaking down the music of the original game (in real life) just below.
What's more, there's the ability to access a model viewer for various characters once you finish The Last of Us Part 2. As we've found out, this musician is included in the 3D model viewer within the game, and is actually named as Gustavo. You can see the character model in the main image of this article.
That's just about all the proof you need for this character representing the acclaimed musician in The Last of Us Part 2. Speaking of finishing the game, you might want to head over to Kat's excellent deconstruction of how the sequel manages to pull of its biggest plot twist (but only just). Alternatively, you can read Jake's brilliant piece on how The Last of Us Part 2 understands the importance of music in mourning.