master violin and gamba player whose treatise Selva di Varie passaggi secondo l'uso moderno (Milan 1620 and facsimile reprint by Arnaldo Forni Editore 2001) details improvisation of diminutions and Suzanne is given as one example. Although most diminutions are written for organ, string instruments or cornett, Suzanne is "per violone over Trombone alla bastarda". With virtuosic semiquaver passages across the range of the instrument, it reflects Praetorius' comments about the large range of the tenor and bass trombones, and good players of the Quartposaune (bass trombone in F) could play fast runs and leaps like a viola bastarda or cornetto. The term "bastarda" describes a technique that made variations on all the different voices of a part song, rather than just the melody or the bass: "considered illegitimate because it was not polyphonic". Chamber music In the 17th century, a considerable repertoire of chamber music using sackbut with various combinations of violins, cornetts and dulcians, often with continuo, appeared. Composers included Dario Castello, Giovanni Battista Fontana, Giovanni Paolo Cima, Andrea Cima, Johann Heinrich Schmelzer and Matthias Weckmann. Antonio Bertali wrote several trio sonatas for 2 violins, trombone and bass continuo in the mid-17th century. One such Sonata a 3 is freely available in facsimile form from the Düben Collection website hosted by Uppsala universitet. A "Sonata a3 in C" is published by Musica Rara and attributed to Biber, although the authorship is unclear and it is more likely to have been written by Bertali. Dario Castello, a wind player at St. Mark's Venice in the early 17th century had two books of Sonate Concertate published in 1621 and 1629. The sonatas of 1-4 parts with bass continuo often specify trombones, as well as cornett, violin and bassoon. The numerous reprints during the 17th century affirm his popularity then, as perhaps now. Giuseppe Scarani joined St. Mark's Venice in 1629 as a singer and in the following year published Sonate concertate, a volume of works for 2 or 3 (unspecified) instruments (and b.c.). The title has been suggested was chosen to try and capture some of Castello's success. Tiburtio Massaino wrote a Canzona for eight trombones, published in Raverio's 1608 collection. Johann Heinrich Schmelzer wrote several sonatas that included trombones—such as his Sonata à 7 for two cornetts, two trumpets, three trombones, and basso continuo. Daniel Speer published a four-part sonata in Neu-gebachene Taffel-Schnitz (1685). In 1687, Speer published the first