Mahan Esfahani and Avi Avital at the Bristol Proms This image appears in the gallery:Avi Avital and Mahan Esfahani at the Bristol Proms 16. Mahan Esfahani and Avi Avital at the Bristol Proms The duo talk passionately about why their instruments work so well together. Photo: Andy Squire 17 images See the full gallery: Avi Avital and Mahan Esfahani at the Bristol Proms