I never thought an actual orchestra would perform the Undertale soundtrack. But it happened! :bademoticon: (Undertale emoticons overload)
though "sans." doesn't sound as good...
But wait, there's more!!!
There are a few mistakes, but they're making another version according to a comment. I'm still listening to this, so if you look at my edits to this status, you can see my complaints.
I'm blaming trumpets for some parts of the music, and the clarinet (I think it was) squeak at the end of Bonetrousle was... weird. I don't know if it was intentional or it was a fail at a high note. Get a flute for doing high notes, as they have a higher range.