Perched at his window like a day-dreaming lookout, the shy narrator watches the girl next door grow from a pig-tailed child into a confident young woman on her green dress–swishing bike. Each time she passes, his heart drums “boum boum boum… balabala boum boum!” Yet words fail him, so he builds whole love stories in his head: an invite to dance after school, a stolen kiss on her doorstep, even the glimmer of a coffee date and whirlwind romance.
That repeated refrain of a racing heartbeat turns the song into a playful anthem for unspoken crushes. “Un Jour Ou L’autre” (One Day Or Another) captures the universal thrill of longing—those moments when you promise yourself you’ll finally say hello tomorrow, while today you settle for watching, hoping, and letting your imagination do the talking. The result is a sweet, upbeat reminder that courage might lag behind desire, but hope keeps the rhythm alive.