The following was sent in to us by a priest in the diocese of San Luis, the pastor of the parish of San Antonio de Padua in Potrero de los Funes, Argentina. There he tells us that he celebrates according to both forms of the Roman liturgy, as well as ad orientem.
In addition (and take note of this), he also offers Sung Vespers in his parish on Monday, Wednesday, Friday and Saturday evenings, as well as Sung Lauds on Tuesday, Thursday, Saturday and Sunday mornings. These are offered according to the Liturgia Horarum and employ Latin and the vernacular, as well as Gregorian chant.
Here are a few photos.