"I Am in Love" is a lively and energetic song from the Bollywood movie "Once Upon a Time in Mumbaai." This peppy track exudes the spirit of youthful romance and infatuation. Sung by KK and composed by Pritam, the song encapsulates the feelings of being head over heels in love. Set against the backdrop of the 1970s era, the song's catchy tunes and foot-tapping rhythm evoke a sense of nostalgia for a bygone era of Mumbai's underworld. "I Am in Love" is a memorable addition to the film's soundtrack, adding a vibrant and playful element to the storytelling.