The song "Day One" by Calvin Harris, Pharrell Williams, and Pusha T explores the bond and loyalty between friends who have been there for each other from the beginning. The lyrics depict memories and experiences shared between the artists and their friends. In Pharrell Williams' verse, he reflects on their youthful days, riding scooters, wearing stylish clothing, and navigating the challenges they faced. He acknowledges that his friend is the only person who truly understands him and supports him even when he feels lost. Their friendship is highlighted as unconditional, with his friend always being there to mend Pharrell's broken heart. Pusha T's verse focuses on his rise to success and his appreciation for his day one friends who have been with him through thick and thin. He contrasts his genuine friends with fake ones and expresses his gratitude for their constant support. Pusha T mentions his experiences traveling the world and the lessons he would give to his younger self about making wise investments. Overall, "Day One" celebrates the unbreakable bond between friends who have stood by each other's side since the beginning. The song emphasizes the importance of having someone who understands and supports you through both good and challenging times.