Are Hanon exercises useful?
Hanon exercises are great for helping you isolate particular "riffs", if you will, that are difficult to play. The idea being, if you repeat them ad naueseum, you'll be able to play them. In the end, any given Hanon exercise will be useless unless you're playing music with figures that are similar to the exercise.
What are piano exercises called?
Hanon exercises feature in households all around the globe, and for good reason. These piano exercises, which have been in existence for over 150 years, are proven to massively improve THREE key areas of your piano playing.
How do you practice piano on vacation?
Invest in A Portable MIDI Keyboard
A midi keyboard is the ideal item to practice while traveling. Once connected to your computer they will let you play the piano pretty much anywhere and they are quite affordable.