_:n1b6b912ca2d64282b2e459a0b0b224e0xb21
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"The instructor for this course is clearly an expert, and I enjoy the lectures. However, the course description says it is beginner level, but it is actually a pretty challenging course that, I think, assumes you have some background knowledge. If you have ever played piano and have some knowledge of the keyboard, and if you have a keyboard at home you can use to help you practice, that would helpful. There is a lot you need to memorize, so the 2-3 hours a week may not be enough. Also, you won't be able to do all the quiz questions on the phone app because the sound files don't work. I asked about this and was told this is a bug they are working on. I just have to use a laptop or desktop to do the course. I had hoped to be able to do some of it, at least, while commuting. Looking at the comments in the course, it appears that they have been working on this bug for some time, but no resolution.  I wish I had taken the course as a survey, not the $$ version. "
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