"Wolfgang G. Haas used John Stanley's" Ten voluntaries for the organ or harpsichord »op.6 and op.7 from the years 1752 and 1754 as a template. The original manuscript includes an upper voice, which usually uses only the natural notes of the trumpet and an indeterminate bass voice. certainly the voluntaries were already played during their period of trumpet and orchestrated accompaniment. Therefore, a processing for 5 trumpets is legitimate. "(Willi Röthenmund in SMZ, 6/2000, p 30)
