Using just Tom's given positions, I had the following chart within about 10 mins time.
OK, so you took the decision to challenge yourself to identify the chart data and then had a way to identify that as the musician, and then did the honourable thing and not comment - or maybe you decided not to participate and then did the chart - either way let me make a response to the comments about how someone might have obtained the chart details if they'd wanted to.
Investigating the data is one sort of challenge but I can guarantee that the better, more enjoyable, and more productive challenge is to see what we can get by just looking at the charts, and what techniques play out in practice. Once the identify is known, the brain flips - we start thinking about what is known of that person rather than reading the symbolism - we can't challenge ouselves in the same way, or get the benefits of honest realisation about where we went right or wrong - and more importantly, why.
Since astrology refelects time I guess the the only way to force everyone into just looking at the charts and not getting any kind of outside input is to offer a blank chart with no details. But the point about omitting the outers is not to prevent investigation work, because if people prefer to do that it's their choice - the idea is to keep the focus on traditional techniques and not make something that is supposed to be a mystery too obviously not a mystery. People have to choose to spend time tracking down information for charts like this and putting clues together to identify the characters before they are revealed - they have to consciously step outside the borders of this challenge (and know that they are doing that). If that happens and then someone contributes it's a shame because there is no personal satisfaction for anyone in getting the choices right if anything but astrological reasoning was used. But again, their choice. All we are doing here is providing the means for members to do this if they want to. There are several layers of challenge in these exercises, and one is to recognise with how comfortable we feel left alone with just the astrology. So James, next time, why don't you just have a go instead? We will all be watching you, and it will add to the excitement and mystery for all of us to wonder whether you will make a choice just using the chart as posted. And it doesn't matter a jot if you are right or wrong because no astrologer works this way in real life. And you don't have to exclude yourself if you don't generally use traditional techniques - just be prepared to lose the outers for the purpose of this exercise.
As for your suggestion, I have something in mind that will fit your suggestion - maybe next month in the general nativities forum, where anyone can feel free to use whatever technique they like.
In the meantime, I liked this challenge just as it was and hope we can keep the focus now on follow-up discussion for those who did puzzle over the charts and went through the angst of wavering over this and that and finally picking one, and then wondering whether to change it. None of these characters are known to me so I hope we can go through all three charts in more detail after Tom has contributed his feedback. I'm still looking and thinking about all three charts, because I've come to assume something about their characters based on their nativities. I think it was a great selection of alternate themes - one an artist, one a sportsman and one a theologian: the key midheaven factors were Venus, Mars and Mercury - perfect.