Yeah Terra's easy, it took me about 10 seconds to figure out the notes on xylophone but hey it rocks. Have you heard the version from that concert? It was rearranged by Uemetsu and features a full orchestra and a japanese vocalist (with japanese lyrics). At first I thought the singing was wierd but it's a good accompaniment part to the melody (played by a japanese flute in the first have and then the strings in the end, where the flute takes over the vocalist's part). Anyway the string parts are really cool and there's a great orchestral bass drum part that always hits with two eighth notes, sounding like a heart beat (like in the Metroid Prime 2 menu theme). Anyway the singer could be softer and the orchestra louder and I'd prefer just oohs and ahhs instead of lyrics but whatever.
And there are two great Terra remixes on OCremix.com... One is called Terra in Black, it's basically a guitar anthem with two electric guitars being played by someone who apparently really loves this song (you can tell from the way it's played even) with some cool string hits in the back, and begins and ends with some funky synth vibes. And there's one called Death on the Snowfield which is actually a remix of the aforementioned orchestral concert rearrangement, except very subtle and minimalist, feature only an acoustic guitar, flute (or some sort of high woodwind instrument, wind instruments aren't really my specialty), bass drum, and snare...
Anyway I still think the original Terra's theme is the single best FF theme.. not just as a composition...but just playing that game.. That was easily the best FF rpg and the theme was just so beatiful... I would literally just keep resetting the SNES to hear it again... And everyone I know who played that game apparently did the same haha... Man that song just topped off an amazing game... PS kefka owns sephiroth, the sissy, and all the cliched FF7 characters