Calvin Harris's song "Heatstroke" is a collaboration featuring Young Thug, Pharrell Williams, and Ariana Grande. The song is an upbeat and energetic track that focuses on having a good time and enjoying life. The lyrics tell a story of letting go and embracing the moment. Young Thug starts off the song by expressing his desire to slow things down and connect with his love interest. He emphasizes that nobody can stop the love he has for her. He also mentions his lavish lifestyle, including expensive possessions like a Birkin bag and his admiration for basketball player Michael Jordan. Pharrell Williams then takes over the vocals and encourages listeners to release and let go, urging them to have a good time. He emphasizes the freedom and inspiration that can come from experiencing new things. Ariana Grande's verse expresses the excitement and liberation she feels when the person she loves does certain things. She is inspired by their actions and feels free when they are together. Overall, "Heatstroke" is a carefree and catchy song that encourages listeners to let go of their worries and enjoy the present moment. The collaboration between the artists brings together different styles and voices to create a fun and energetic track.