Here are three examples of Cinnamon Becards (Pachyramphus cinnamomeus) recorded at the El Pizote, near Puerto Viejo de Talamanca (Costa Rica), 6/22 and 6/23/99. Their calls are almost definitively "plaintive".
Here are a few examples of the call and song of the Cinnamon Becard (Pachyramphus cinnamomeus), recorded while the bird sat high in a tree early morning - El Gavilan - in the river bottom (Costa Rica). 11/16/98.