The eighth volume of Bossi’s Omnia for organ contains some extraordinary sound documents, in keeping with Tactus’s publishing policy of using only instruments from the period in which the composer lived, and if possible instruments used by him. The first organ is the one made in 1920 by Giovanni Tamburini from Crema for the Chiesa dei Servi in Rimini: Bossi performed on it in August 1924, shortly before sailing for his triumphal American tour. Through the remarkably mellow, fascinating timbre resources of the Tamburini organ, pieces composed by Bossi between 1908 and 1924 are brought back to life, in a perfect temporal position with respect to the organ’s dating. For the Solo di Clarinetto  and the archaic-sounding Aria da chiesa , we have chosen the Vincenzo Mascioni organ (1901) in the church of Lenno (Como): it has a particularly beautiful clarinet register. The programme is completed by Bossi’s pieces for two organs, which bear witness to the survival of the ancient custom of creating a dialogue between the two instruments. The colossal Fantasia  and the Entrata pontificale  have been recorded by Andrea Macinanti and Francesco Tasini on the Franz Zanin organs of the Church of the Carmine in Imola.