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
Triangle (musical instrument) triangle in tenth-century manuscript, is of an instrument without rings. A triangle without rings is depicted in the King Wenceslaus IV Bible (late fourteenth century) and again on a mid-fifteenth-century window in the Beauchamp Chapel, St Mary's, Warwick. This latter triangle with its open corner has a curiously modern appearance, except that at the top angle the steel bar is twisted into a loop through which the thumb of the performer (an angel) passes. Like its ancestor the sistrum, the triangle was clearly used for religious ceremonies, quite widely in mediaeval churches.The triangle occurs more often than any other instrument