This scene excited great amusement, and the monks were never tired of teasing him about his tune. When the fête-day of Father Johannes came round, Wolfgang presented him with an offertory (72 K.). It begins in a joyous burst with the words (Matth. xi. 11), "Inter natos mulierum non surrexit maior"; then with the words "Ioanne Baptista" he introduces the above melody as a birthday greeting to his friend. Apart from this charming display of childish affection, the offertory, which in any case belongs to his early boyhood, is a beautiful piece of music. The subject, which is pursued throughout with a natural, easy movement of the parts, has the caressing little melody running through it, and is twice interrupted by the words (S. John i. v. 29), "Ecce Agnus Dei qui tollit peccata mundi," given in a quiet, serious manner, that has a charming effect. The greeting breaks out once more in the "Alleluia," which ends the piece.[8] In the spring of 1767, Wolfgang again came forward as a composer in his native town. It was the general custom at the university to celebrate the close of the scholastic year by a dramatic representation {APOLLO ET HYACINTHUS.} (59) among the students. In the year 1661, a large theatre, supplied with twelve scenes, was built to replace the smaller one hitherto used, and excited great admiration.[9] According to custom, a Latin play, written by the Professor of Poetry, or some other ecclesiastic, was represented by the "Benedictine Muses," i.e., by the students. The subject was taken from the Old or New Testament, more rarely from heathen mythology, and was always intended to point some particular moral.[10] Following an old usage, musical portions were interspersed through the tragedy or comedy, as they were also in the Italian spoken drama, so that a short Latin opera of a congenial tendency, with one part serving as a prologue, was introduced between the acts of the drama, just as in the opera seria the intermezzi or ballets came between the acts. Members of the chapel undertook the composition, and some of the singers assisted the performance by taking the more difficult parts. On May 13, 1767, the Syntax, that is, the students of the second class, performed the tragedy, "dementia Croesi." This time the musical supplement was entitled "Apollo et Hyacinthus seu Hyacinthi Metamorphosis," and composed by Wolfgang, who is set forth in the printed text-book thus: _Auctor operis musici nobilis dominus Wolfgangus Mozart, un-decennis, filius nobilis ac strenui domini Leopoldi Mozart, Capello Magistri._