Juan García de Basurto explained

Juan García de Basurto (c.1480–1548) was a Spanish composer and cantor of the Cathedral of Tarazona.

He was active at the time the Flemish Chapel included Pierre de Manchicourt and Philippe Rogier.

Garcia de Basurto first appears as a singer heard during the Holy Week festivities April 1517.^[1] His major work is the compiled Requiem mass Missa in agendis mortuorum (1525)^{[2] [3]} which includes parts of Ockeghem's and Brumel's requiems. In 2010 the Spanish group La Capilla Peñaflorida with the Accademia Bizantina of Ottavio Dantone made a video of the agendis mortuorum for NB musika.

Notes and References

1. Russell "The Missa in Agendis mortuorum of Juan Garcia de Basurto," Tijdschrift van de Vereniging voor Nederlands 1979
2. Inter-American music review: Nr12 Robert Murrell Stevenson - 1991 "Eleanor Russell— who mistook Legajo "20" for "2"— attempted to discredit the date March 1, 1504
3. Russell E., The Missa in agendis mortuorum of Juan García de Basurto: Johannes Ockeghem, Antoine Brumel, and an Early Spanish Polyphonic Requiem Mass. "TVNM" (29) 1979, p. 1–37