The plural form for the singular noun piano is pianos.
in 1800s
In the Punjab.
India
Yorkshire
France
italy
Azerbaijan.
yes
Grand pianos can be purchased from the people that make the pianos such as Steinway. In addition, the pianos can also be purchased from retailers such as PianoMart.
Actually electric pianos did not replace acoustic pianos. There are literally millions of acoustic pianos in the united states alone, and more being bought every week. I personally see about 1000 pianos a year because I work as a piano tuner/technician. Electric pianos do come in handy for traveling to gigs, but acoustic pianos are very much alive and well.
No, Emerson pianos are not good.