What is beat again?

"Beat Again" is a song by British boy band JLS, released in 2009 as the lead single from their self-titled debut album. The song was written by Wayne Hector, Steve Mac, and Danish production duo DEEKAY. "Beat Again" reached number one on the UK Singles Chart and was certified Platinum in the UK. It also charted in several other countries, including Ireland, Australia, and New Zealand. The song has an upbeat pop and R&B sound and its lyrics describe the feeling of falling in love and having one's heart beat fast again. "Beat Again" has been noted for its catchy chorus and strong vocals from the members of JLS.