One of my students is playing El ultimo trémolo, also called Una Limosna por el Amor de Dios or El último canto by Agustín Barrios Mangoré so I was looking for good examples for her to follow. Who better than David Russell. An excellent video for this work where you can see everything Russell does fingering-wise. His beautiful phrasing, rubato, and dynamic shaping is superb.
Via Amazon: CD (Music of Barrios) or sheet music (The Complete Works of Agustin Barrios Mangore, Vol. 2)