* Since slide trumpets have been recently reconstructed by a number of instrument makers, first by Ewald Meinl (Geretsried, Upper Bavaria) and A. Egger & Son (Basel), it is now possible to study the relationship of this instrument to its music. Until now, scholars had been confronted with what seemed to have been an insoluble riddle: the music for the slide trumpet seemed to have been notated, without exception, in the wrong octave of the instrument. We are taking as a starting point the fact that the slide trumpet was played mostly within the second octave of the harmonic series and that, as a result of our practical studies with the reconstructed instrument, each partial could be lowered with the slide by three half.steps. On a slide trumpet in C, we thus arrive at the following pitch reservoir