* until this time, with certain exceptions in England, the trumpet had not been allowed in church presumably because of its military associations. However, as a slide trumpet, it seems to have associations. However, as a slide a series Some of these are the e and Arnold de presumably because of its m willingly accepted in a series of compositions. Some of these are the missa trompetta by Estienne Grossin (c. 1420), two settings of Et in terra by Richard de loqueville and arnold de Lantins, Ave virgo by Johannes Franchois, Virgo dulcis by Heinrich von Freiburg, the Missa tubae by Cousins, and an anonymous Kyrie tubae, besides Dufay's Et in terra "ad modum tubae", a piece in which natural trumpets are either to be played or else imitated by other instruments. In these works, the presumed slide trumpet is called trompette, appearing mainly in the contrarenor part. These parts can be differentiated from the others by their frequent leaps of fourths and fifths. It is thus possible to speak of a "(slide) trumpet style" and also to associate the slide trumpet with similar parts in other compositions. Furthermore, trumpet style was described in this way, referring to secular instrumental music, in a German theoretical treatise of the early fifteenth century (Breslau university library, cart. IV. Qu. 16, fol. 18)