I use Bitcoin every day, and these steps will rule out 99.999% of users from being able to get any etherium (and hence buy this music)
The biggest problem with bitcoin is getting "normal" people to acquire even small amounts without going thru too many hoops, Coinbase and Circle are doing a good job there
Another issue, the guide linked says to skip to step 4c if you already have bitcoin, but then step 4c tells you to use the account you created in 4a.
I think this would be a lot clearer if you split this up into three guides: "How to buy bitcoin", "How to buy ether" and "How to buy the product".
EDIT: Also, the TLS certificate for alpha.ujomusic.com does not validate in firefox for me, as the certificate chain is not correctly installed on the server.
No problem, this is very interesting and I suspect I'll buy the song just as an excuse to play with ethereum. Haven't had a chance to look at it before.