This study examines the Old Provencal language on the basis of philological interpretations of a few selected texts, both prose and poetry. The secondary source material includes a razo and two vidas from the troubadour biographies, as well as three poems selected from the works of Bernart de Ventadorn, the Countess of Dia, and Giraut de Bornelh. The linguistic commentary is extensive enough to assure coverage of many important issues in Provencal historical grammar.