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I started to learn how to play on a Cassio keyboards (before we got a real piano) that had lots of those Demo songs too :D I now what you mean! Sometimes my piano teacher was putting some simple beat to keep the rhythm and we were playing to it.
Pretty cool stuff! But knowing how to actually play is the best :)

Learning to play may not be easy (at least to me, it's not. It can even get frustrating sometimes), but when it pays off and the results come, it's so fulfilling!

It is :) And I had a great teacher. That also helped a lot.
Fingers crossed for your progress :)

Thank you.