"Party In The U.S.A." by Miley Cyrus is in **Key: A** with a **BPM: 113**, creating a lively, upbeat tempo. The track blends **pop-rock guitars**, **pulsing synths**, and a **driving rhythm section**, showcasing polished, radio-friendly production. Its **80% energy** radiates carefree, celebratory vibes, amplified by Cyrus's confident vocals and anthemic hooks, making it a quintessential feel-good party anthem.