Both males and females sing, but the female seems to do it for shorter time periods and is slightly weaker then the male’s song (Hilty 2011). They do use squeaking and twittering noises in their vocalization much like the Palm Tanager. They make an escalating “seeee”(Hilty 2011). Their call is a dry, slightly strained “tsuup” sometimes followed by twittering notes (http://macaulaylibrary.org/audio/184523). The songs are very squeaky or squealed notes, sometimes drawn out; the most common notes are seee see chaa chaa sweez cha sweez cha-cha (Isler and Isler 1987). They are high pitched notes and the patterns are often repeated then speed up near the end of the song (Isler and Isler 1987). Additional audio recordings of vocalizations of the Blue-gray tanager can be heard at Macaulay Library and at xeno-canto.