A piano keyboard has keys, and a door needs a key to be locked and opened so a piano and door are alike because both have/need keys.
a piano.
For different reasons. I like piano because I like music. One reason why might be that it is relaxing
The harpsichord, clavichord and clavier are three such instruments.
I like the piano because both the melody and the harmony can be played simultaneously by one person. I like the beauty of the tone also.
Yes, piano is a common noun. It is only a proper noun when used as a specific name or for a title, like Phillip's Piano Store or the movie 'The Piano'.
piano
A piano.
A Piano
You can find the piano sheet music for songs from Klonoa Door to Phantomile at MediaFire.
Piano
a piano
A piano.
A piano.
a piano
Mon-keys Don-keys Piano keys
They both sound like a piano.
A piano.