Polo Vallejo is an Ethnomusicologist, Composer and Doctor of Music Sciences. Guest teacher and lecturer at international Universities, Conservatories and Music Schools, his research works on the field, closely followed by the eminent ethnomusicologist Simha Arom, have been materialized in a descriptive study —The Musical Patrimony of the Wagogo of Tanzania: Context and Systems— (CNRS, Paris /UCM Madrid) concerning to the polyphonic proceedings practised by this African society, presented at the Universidad Complutense de Madrid under the direction of Victoria Eli Rodríguez. At least, his works are edited in several recordings (OCORA/Radio France label, VDE-Gallo, Geneva), numerous articles, and an original book-CD Mbudi mbudi na mhanga focusing on the world of Wagogo children’s music. Polo Vallejo is a member of Musica Presente.