I believe the term is a chord. Two is an interval and one is a note.
piu means "more" ( Compare the Latin word plus) piu forte means "more loud" , that is "louder".
The musical term for a singing voice that vibrates is vibrato. It is produced by rapidly changing the pitch just slightly.
Conjunct
Note is a musical term. It is a sign representing the duration and pitch of a musical sound.
That's not a musical term.
the musical term for a high female voice is soprano
The likely word is conservatory (a term once used for a greenhouse, or more typically a school for musical students, or a room used for musical performances).
multi movement is basically a piece with more than one movement.
Musical numbers is just another term for song.
Prelude
vibrato of someones voice
Guitar is a musical instrument