"Si Supieran" (English: If They Knew) is a Pop song by Mexican singer Paulina Rubio released to digital retailers and streaming services on September 12, 2019 and was produced by Rubio, making it the first song released independently from her label Universal Music.[1] This is also Rubio's first new single since her 2018's studio album "Deseo". It was written by Rubio herself along with Antonio Cortés “Barullo”, Jesus “Dale Play” Herrera y Oscar Hernández, and produced by Jesus “DalePlay” Herrera.