I think you've pretty much perfectly illustrated the struggle that a lot of aspies (myself included) go through every day. I too think in metaphors sometimes; I always likened the aspie experience to being a robot or electronic product that got off the assembly lacking key programming that every other robot has, guaranteeing their success. But I enjoy your allegory way more.
I'd like to think I'm beginning to learn violin, but I still am mastering the most basic chords. I hope I can learn how to play a song before my time here on Earth is through.
I find this has been my experience as well, but let me add to that. If someone were to do an interview with me I'd insist that we have it via email as opposed to in-person or over the phone, because with typing you have the time and space to really flesh out your thoughts and edit your wordage before submitting your response (although this is a sorely underutilized benefit of computers, if much of social media is any indication). You're not as "on-the-spot". Whereas speaking in-person requires you to follow all these ironclad yet unspoken social rules like establishing eye contact, not speaking out of turn, not slurring your words, and so on. Aspies have long been associated with having a hard time with internalizing these rules and I'm no exception. If someone were to have a conversation with me via text message versus over the phone they'd think they were talking to two different people.