Interestingly I tried it on my genuine echo, I also have can't find Beethoven. But when I tried it on my fake alexa, LOL - ilive concierge with alexa built in - it did let me know that I need prime unlimited to play Beethoven. How much is unlimited anyway? I am a believer that best things in life are free. So I guess I will just youtube Beethoven if I feel like listening to it which is never, LOL.
But WTF, genuine echo product does not inform why they cant play Beethoven and 3rd party Alexa products can? Damn. Something not right there.