Are there times when you try to stay off your phone entirely? On concert days and when I am on vacation.

Biggest time-wasting app: YouTube. I love watching performances by Heifetz, Horowitz, Rubinstein, Pavarotti and many other great masters of the past.

Favorite food/restaurant-related app: OpenTable and Yelp are very important sources during my extensive travels.

Favorite fitness/workout app: Not strictly a workout app, but I like Calm for meditation, mostly on the plane.

Favorite podcast: Kermode and Mayo’s Film Review on the BBC, and I also have a weak spot for Recode’s Pivot, which is about the newest business strategies in tech.

Most surprising app you use: Night Sky. I use it in different cities that I travel to. If you hold your phone up to the sky, it shows you which star formations you are looking at.

Strangest autocorrect mishap: My phone once turned Beethoven into “beet root concert.”

Craziest place you’ve ever left your phone: Inside the Steinway—I searched for it desperately and had almost given up, until I heard some strange sounds coming out of my piano during rehearsal.

App I wish someone would invent: The Beam Me Up Travel App that takes me from continent to continent in seconds.

Favorite ringtone: Not “Für Elise.” I love the piece; it is a masterwork of music, but I have heard the most terrible ringtone renditions.