'Letter and Secret') is the seventh album by the Filipino rapper Gloc-9.

In an interview by Myx, Gloc-9 stated that he had a dream collaboration with a certain artist that happened on this album (though he did not reveal the name of that artist).

[1] The album has tracks featuring Regine Velasquez-Alcasid, Rico Blanco, Quest, Marc Abaya of Kjwan, Zia Quizon, Kamikazee, Eunice Jorge of Gracenote, Denise Barbacena and Sly Kane.

[2] The album is released in October 2013[3] with the song "Magda" featuring Rico Blanco[4] as its first single.

It has 12 tracks under the Universal label.