I was playing piano at a cozy Neapolitan restaurant when Martyna suddenly began singing “Someone You Loved” by Lewis Capaldi.

Even with the best speakers it is difficult to replicate the magic of a live performance, but there is now a piano that will play an accompaniment to almost any tune you want to listen to. The ...

While playing piano in a cozy Neapolitan restaurant, she began singing “Someone You Loved” by Lewis Capaldi. What started as a simple piano performance naturally turned into a live duet.

The piano duet used to be an important medium in the heyday of domestic music-making, not least in the dissemination of arrangements of orchestral works that were otherwise difficult to hear. Among ...