For some reason, it seems to me that unlike other instruments, pianos aren't that common in Star Trek. I remember Voyager's Holographic Doctor playing a jazz piece (I think) on a piano in a holodeck, and Seven learning to play piano from him; I also remember that recently, in a Star Trek: DISCO episode, Adira played a melody on a piano. Are there any other times that a piano was played or even seen in an episode? Could there possibly be a reason why pianos aren't so common in Star Trek? Or is it that they appear more often than I thought?
If Memory Alpha is to believed, the piano is seen or referenced 15 times. However, the actual count is higher:
- Twice in TOS (including movies)
- Three times in The Next Generation (including movies)
- Six times in Deep Space 9
- At least 3 times in Voyager
- Unnamed holodeck location, Seven & Chakotay in Human Error (pic).
- Le Coeur de Lion (holodeck), played by an unknown hologram accompanied by Seven singing in The Killing Game (pic)
- Chez Sandríne, at least shown twice in the episode Someone to Watch Over Me (holodeck, program Paris 3), possibly in other episodes as well (pic). Later in the same episode, the Doctor plays the piano as well (pic).
- Twice in Enterprise
- Once in Discovery
Compare to four uses of trumpet, six of trombone, eight of guitar, 12 of Vulcan lute, and two of the banjo.
In the TOS episode "Miri", the landing party chases Miri into a house.
And I think it is a piano in the house which is the subject of the lines:
KIRK: How old is this thing?
SPOCK: About three hundred years.
If that is correct, that is one more example of a piano in Star Trek.