"Number 1" by Goldfrapp is a song about infatuation and desire. The lyrics suggest a strong emotional connection to someone, referring to them as the singer's "favorite moment" and comparing their pursuit of that person to a dog's loyalty. The verses allude to the fleeting nature of relationships and moments, with references to sunsets and their quick disappearance. Despite this, the singer's desire for this person remains constant. The chorus emphasizes the singer's intense attraction and determination to have that person, comparing themselves to a dog relentlessly chasing after its target. The repetition of "Yeh, yeh, yeh, yeh" adds to the urgency and passion in their pursuit. The bridge in the song introduces the image of howling under the moon, potentially symbolizing their desire reaching a peak or expressing their longing and primal instincts. Overall, the song depicts the singer's devotion and unwavering pursuit of someone they consider their "number one." The lyrics reflect the intense emotions and longing associated with infatuation and the desire to be with that person.