Trio Vegabajeño was informally formed in 1943 at the Tortuguero Military Camp of Vega Baja by Fernandito Álvarez who gathered a few co-workers (Octavio González and Benito de Jesús) to put together a few musical numbers.
During this line-up Guillermo Venegas Lloveras composed their theme song Tema - Trío Vegabajeño in which aside from describing the town of Vega Baja they also state what town is each one from: [Fernandito] "Yo soy de Vega Baja (I am from Vega Baja) [Benito] Barceloneta es mi pueblo (Barceloneta is my town) [Pepito] Humacao fue mi cuna (Humacao was my cradle)..." Although being a trio, the group became a quartet in 1952 when Jorge Hernandez (requinto player) joined the group.
The following discography only covers the records in LP format with the Marvela label which started once the fourth member, Jorge Hernandez, joined in 1952.
In 1986 one of the classic line-ups (Fernandito, Benito, Pepito and Jorge) reunited to record a song ("Medley Trio Vegabajeño") with Danny Rivera for the album Ofrenda.
Aside from that, two of the other songs were composed by members of the trio: "Meleque" (by Pepito Maduro) and "Que Lindas Son Las Mañanas" (by Benito de Jesús).