Just got a hold of The Trumpet, and I'm VERY impressed by it. I was really intimidated by it at first, just due to all of the GREAT demo's I've heard so far. Once I got into it, I found it very simple, easy to use, and ZOMG Expressive!!
Ah... Majora's Mask. Out of interest have you had a go at doing any of the pieces from a Link to the past? I wasn't really too fond of the more 'atmospheric' approach that they took with the later games (in the temples mainly - although there were a few good tunes to be found here and there).