The MP3 clip here, limited to 30 seconds, happens late in the arrangement, which is 3 minutes and 15 seconds long. You'll hear the characteristic Stevie Wonder modulation up a half step. I brought the whole song down a half step from the original key of B (yikes!) to Bb. After the modulation players will be challenged briefly by the key of Cb. I urge you to purchase this arrangement, as I'm confident you'll find that I've captured the essential elements, as well as the excitement, of Stevie's great song, and allowed the brass quintet to sound at its best. Professional quintets can really enjoy this arrangement, but it is also playable by good student quintets.