However, playing the piano did not prove to be challenging or interesting to him - he once said in an interview.
"This was the one that was so challenging to the players and it's nice to see their efforts get rewarded."
Other areas of the museum are more challenging to art, though.
Picking through this season's crop of television movies can be more challenging than a Saturday morning trip to the neighborhood farmers' market.
This presented a clearly defined and challenging restriction to the demomakers.
Such customization is challenging, especially to researchers with limited software development resources.
Even limited rural elections have sometimes proved more challenging to party rule than conservatives would like.
But the art will prove no less challenging and provocative to an adult audience.
The experience of meeting you is very challenging to us, and we have much to talk about among ourselves.
Some slopes are even split into multiple levels: difficult terrain to the left, intermediate in the middle, most challenging to the right.