Rhetoric, or the "art of the faked word", is a discipline not only circumscribed to words themselves. It is in the handling of them where it first arose, but later on, and due to its power, it moved on to other arts and fields. In this study we will concentrate on the so called "musical rhetoric", and we will exemplify this dimension in the musical form that has possibly represented the best support for his rhetoric type: the madrigal. Likewise, we will approach the main musical figures under which rhetoric is articulated, and we will concentrate on the madrigal by Gesualdo Io pur respiro, where some of the previously approached figures will be materialized.