"Si Supieras" (English: "If You Knew") is a song by Puerto Rican rapper and singer Daddy Yankee and Puerto Rican duo Wisin & Yandel, released on June 28, 2019 by El Cartel Records. The track was written by Daddy Yankee, Wisin, Yandel, Rafael Pina, Eric "Lobo" Rodríguez, Juan "Gaby Music" Rivera, Francisco "Luny" Saldaña, and Marco "Tainy" Masis, and was produced by Dominican producer Luny and Puerto Rican producer Tainy.
"Si Supieras" was written by Daddy Yankee, Wisin, Yandel, Rafael Pina, Eric "Lobo" Rodríguez, Juan "Gaby Music" Rivera, Francisco "Luny" Saldaña, and Marco "Tainy" Masis, and was produced by Daddy Yankee's and Wisin & Yandel's longtime collaborators Luny and Tainy. Luny, as member of the Dominican production duo Luny Tunes, has worked with both acts on "Mayor Que Yo" (2005), "Noche de Entierro" (2006), and "Mayor Que Yo 3" (2015). He has also produced various songs by Daddy Yankee, including "Gasolina" (2004), "Lo Que Pasó, Pasó" (2004) and "Rompe" (2005), as well as the majority of Wisin & Yandel's album Pa'l Mundo (2005), including the singles "Rakata" and "Llamé Pa' Verte". Puerto Rican producer Tainy took part on the production of every studio album by Wisin & Yandel since Pa'l Mundo and won a Latin Grammy Award for Best Urban Song with them for "Abusadora" in 2009.