This Adele mashup is arguably the best in the entire Glee series. The performance feels heavy because of everything going on unspoken by Santana and her peers, and the song perfectly suits the tension of the situation. Rivera flawlessly depicts the cheerleader's anger and fear as she sings alongside her friends, and allows a glimpse at her vulnerability that Santana rarely leaves unguarded. It's a stunning performance that shows the duality of the character and the skill of the actress.