Hmm. The Waltz in A-flat major, aka the Farewell Waltz? It sounded nice. Keep practising, and you'll have it perfect. :)

I used to play the Minute Waltz from memory. I haven't played in so long. :/ Now I just compose piano music and put it up here.

I play it from memory, i suck at reading sheets, i must learn but... i'm lazy XD. Mostly i learn things by ear, big mistake. Anyways, it's been a long time since i sitted and learned something classic. Mostly i compose Progressive Metal O_o so, it's quite a change. I love classic music, i just didn't give myself the time to play it since i was all like "I must be faster... fasterrrrrrrr, play 109283901823712 notes in 1 second. Use the weirdest time signatures DX" and so, ñ.ñ;. So, now that i think i'm good enough i'm giving it a try =). Btw, i never studied piano myself =( (another big mistake), i was Synth Synth Synth all my life ñ.ñ;.

I usually committed pieces to memory, partly in order to avoid turning the page at awkward moments. Whenever I played I always looked at the keys, and if I made a mistake I'd go back to a sort of mental checkpoint from where I knew I could pick it up again; I can't just gloss over any major errors because it screws with my mental map of the music. Once I was playing a piece for my high school's end-of-year prizegiving, and I turned over to the last page and /completely/ forgot how to read music for a few seconds. I knew the piece perfectly, but right at that moment my mind dropped the ball. It took me six tries to finally get the chord I needed to continue. >.< I think that would have to be one of the most mortifying public moments in my life.

Personally, I don't like metal, with a few exceptions. I find it too grating and harsh on my ears. I don't begrudge anyone writing it, or listening to it, as long as I'm not within earshot. :p

I do exactly the same XD. I tend to part everything i play in little parts, so if i mistake something i can go on from that checkpoint, as you said.
I'm the kind of guy who tryes to hear every style, because i think it's kind of not respectful to say "This is a horrible style" without even listening to it not even once (don't get me wrong, i'm not saying you said that, i'm just telling you the way i am D=. I tell you 'cause people tend to get me wrong and go "OMGZ, I DIDN'T SAY THAT" ñ.ñ;). Anyways there are some bands that are labeled like "Metal" but actually have really sweet songs, wich are really great to hear and don't pierce your ears =O. For example a band called "Pain of Salvation" if you ever get to hear their live CD Called 12-5 you'll understand what i mean, or the album BE. Also with Ollllllllllllllllllllllllllllllllllllld work from Dream Theater happens the same (they got too "Hard-Metalish" latetly), say for example Space Dye Vest (Awake), Finally Free (Metropolis PT2, Scenes from a memory), or even Solitary Shell <3 (Six Degrees of Inner Turbulence, CD2). (Pro-Metal geek here XD)

I'm not familiar enough with other musical genres to categorise what I hear. 'Metal' is quite a broad definition, and may include a lot of sub-genres. I like Nightwish, though some of the more raucous songs are a bit painful to listen to. The only other metal/rock I can think of that I actually tolerate/like/can recall the name of is Lordi, particularly 'Hard Rock Hallelujah'.

Waltz... I've got that somewhere for guitar. Memorized it fairly quickly. Nice song to listen to when trying to relax. You did very well DISPITE the error. very nice.