Recorded in October 2003, Sinequanon is the second cd with Carlos Ezequiel, and also became the name of the group. Since 2002 Guto Brambilla (double bass) and Vitor Alcântara (saxophones) are part of the ensemble, performing as quartet.

The result is an album which explores the typical nuances of acoustic performances, focusing on live interplay, no overdubs, and most of the tracks were first takes. Expanding concepts from the previous cd (Images), the group makes use of contemporary jazz devices such as hybrid tonalities, collective improvisation and free interpretation. Sinequanon is a latin expression which entitles the group refers to a unique and determinant alternative, in this case meaninf the artist urgency in responding to his creative impulses.

From quieter and more intimate tracks such as " Recomeço" (L. Santiago) and "Serenata para Luciana" (C.Ezequiel), to sparking odd meters like " Entre Amigos" (G. Brambilla), " We´ll Keep Swimming" (L. Santiago) and "Pedra de Jogar em Doido" (C.Ezequiel), SINEQUANON is the group´s search for an authentic live art work.