I have read that Chopins Minute Waltz was a great 'Salon' piece. What does this mean, for music to be 'Salon Music'?
I suppose someone ought to make the comment into an answer!
Salon music was indeed popular in the 19th century in Europe, at events which were called 'salons'. It comprise usually short solo piano pieces, which were often virtuosic. Fantasia were played, often using popular operatic themes, which were played in ways trying to 'paint a scene'.
Chopin would have been in somewhere near the beginning of salon music, and Liszt would certainly have enjoyed playing at such events.