What does "perform extravagantly" mean and how does it reduce musicality? Quiet playing yet beautiful playing is not really different to louder and beautiful, most audience are captivated by good playng and excellent repertoire choice. Improvisations are more difficult to judge IMHO compared to playing compositions, they generally are more difficult to use to "captivate" an audience with, your improvs are nice but ramble along the same ideas.
To perform "extravagantly" is as we see in almost every piano piece performed by Lang Lang. It's over the top and sometimes takes away from the beauty of the music. Another question I have is if performing as Lang Lang does, does it make it harder physically to perform the piece- with all the movements and what not?
"Ramble along the same ideas" - So far, I've done 10 improvs. This one was successful in that I captured the emption I wanted to capture, it may have taken some tims, but eventually I got there - is that not in essence what improv is about
To captivate an audience I guess on the internet you will always satisfy some kind of niche but to captivate a greater audience you need to play more popular and exciting things or show us something we didn't know we needed.