production from DJ Adam, DJ David, DJ Urba & Monserrate, Ecko, Gran Omar, Luny Tunes, Mr. G, The Majestic, Noriega, Rafi Mercenario and Santana. Executive production for the track "Que Es La Que Hay" was handled by Ivy Queen and overall executive production was handled by Eddie Dee and Iván Joy for Diamond Music. The vocals of Glory and Valerie Morales were used in the recording and production of some of the songs off the album. Esteban Piñero served as the album's mastering engineer. The album's creative design was handled by Holly Chen and photography was taken by Gary Bonderenko. Release and promotion 12 Discípulos was independently released physically on January 29, 2004, by Diamond Music in the United States and Puerto Rico. It was released two days after the release of Ivy Queen's Diva Platinum Edition. Due to the album's commercial success, the album was picked by Machete Music and re-released on December 13, 2005. It was released digitally on July 25, 2009. The album's lead single was performed live at the Latin Grammy Awards of 2005. The performance began with a video presentation of Héctor Lavoe's 1972 hit "Quitate Tu Pa' Ponerme Yo". It was then followed by Gallego introducing the song with "Those were the masters, we are the twelve disciples". Amid screams, Vico C followed delivering his verse. Eddie Dee followed who was succeeded by an unexpected Tego Calderón. One by one, Voltio and Zion sang the chorus. Ivy Queen then delivered her verse, which according to Univision, made her the queen of the night. She was followed by Johnny Prez, Tito "El Bambino" and Lennox. The performance ended with a standing ovation from the public. During the performance, each performer wore a shirt with a picture of the salsa singer in which they most identified with. Songs and repertoire The album opens with "Intro – 12 Discípulos" ("Intro – 12 Disciples"), in which all twelve featured artists collaborated. They were united "as one on a reggaetón track and showed that unity is needed for this genre to evolve and survive". The song's musical aesthetics lean heavily toward salsa. "Cuando Es" ("When Is It?"), performed by Eddie Dee, features sensual vocals by Glory. Dee opened the door for Glory, as she later was featured on "collaborations with the genre's most important and influential recording artists." "Donde Hubo Fuego" ("Where There Was Fire") is performed by Daddy