Breakdance (1984) [UPDATED]
The request for a "piece about 'Breakdance (1984)'" most likely refers to the (originally titled Breakin' in the U.S.) that helped ignite the global breakdancing craze . However, 1984 was a massive year for the genre, and you might also be thinking of the hit single "Breakdance" by Irene Cara.
Released in May 1984, this movie was a surprise box-office juggernaut, outgrossing classics like Sixteen Candles in its opening weeks. It followed the story of a struggling jazz dancer, Kelly (Lucinda Dickey), who teams up with two street dancers, Ozone (Adolfo "Shabba Doo" Quiñones) and Turbo (Michael "Boogaloo Shrimp" Chambers), to take on the professional dance world. Breakdance (1984)
Since the film is the most culturally dominant "Breakdance (1984)" reference, The request for a "piece about 'Breakdance (1984)'"