Sackbut used as a clash until the Renaissance, when it became consonant in compositions, which went hand-in-hand with the widespread use of meantone temperament. During the 17th century, Well temperament began to become more and more popular as the range of keys increased. Temperament affects the colour of a composition, and therefore modern performances, typically employing equal temperament, may not be true representations of the composers' intentions. These old tunings are the result of the natural harmonic series of a brass instrument such as the sackbut. As the bell is smaller than a modern trombone, the harmonic series is closer to
American Musical Instrument Society American Musical Instrument Society The American Musical Instrument Society (AMIS) was formed in 1971 "to promote study of the history, design, and use of musical instruments in all cultures and from all periods" (the branch of musicology known as organology). Based in the United States, it publishes a journal and a newsletter, holds annual conferences (occasionally in conjunction with the Galpin Society), maintains an active website and e-mail forum, and presents five awards. The society's international membership includes collectors, curators, historians, performers, instrument makers, conservators, restorers, dealers, teachers, and students. The "Journal of the American Musical Instrument Society, "(ISSN 0362-3300)