Theo như Gaga chia sẻ, P. I là ca khúc viết về sự hỗn loạn của xã hội hiện đại, về những điều ngọt ngào, đẹp đẽ, hay ho mà Mạng xã hội (MXH) trưng ra mắt mọi người hằng ngày. Mọi người dường như chỉ biết nhắc đến những điều phù phiếm bên ngoài, những điều mà thực tế không có thật và con người ngày nay đang cố giữ cho mình những "illusion" đó như chính nó đang diễn ra trong cuộc sống họ. Vì vậy, bài hát này là để kêu gọi mọi người hãy loại bỏ những ảo ảnh đó ra khỏi cuộc đời, sống một cách thực tế hơn và sự gắn kết giữa người và người ngày càng khắng khít hơn trong thời đại MXH bùng nổ này. Lyrics Tryin' to get control Pressure's takin' its toll Stuck in the middle zone I just want you alone My guessing game is strong Way too real to be wrong Caught up in your show Yeah, at least now I know It wasn't love, it wasn't love It was a perfect illusion (perfect illusion) Mistaken for love, it wasn't love It was a perfect illusion (perfect illusion) You were a perfect illusion I don't need eyes to see I felt you touchin' me High like amphetamine Maybe you're just a dream That's what it means to crush Now that I'm wakin' up I still feel the blow But at least now I know It wasn't love, it wasn't love It was a perfect illusion (perfect illusion) Mistaken for love, it wasn't love It was a perfect illusion (perfect illusion) It was a perfect illusion (but I feel you watchin' me Dilated, falling free In a modern ecstasy) (Where are you, 'cause I can't see you It was a perfect illusion (But I feel you watchin' me) Illusion (but I feel you watchin' me) Mistaken for love (where are you 'cause I can't see) (But I feel you watchin' me) Mistaken for love (dilated, falling free in a modern ecstasy) Mistaken for love In a modern ecstasy In a modern ecstasy I'm over the show Yeah at least now I know It wasn't love, it wasn't love It was a perfect illusion (perfect illusion) Mistaken for love, it wasn't love It was a perfect illusion (perfect illusion) (Aah) you were a perfect illusion (Aah) it was a perfect illusion It was a perfect illusion Somewhere in all the confusion It was a perfect illusion, illusion (illusion) It was perfect illusion Somewhere in all the confusion You were so perfect You were a, you were a perfect illusion