An aria.
Aria
Reduced paid up
That word could be aria.
There is no such thing as an "extended sentence" in grammar. "Extended sentence" is a legal term, not a grammatical term.
A cavatina is a musical term meaning a short simple song that does not have multiple verses or repetitions. A cavatina can be instrumental or vocal and is generally operatic.
That is the proper spelling of the operatic term "aria".
The term is 'aria-cabaletta'. An example being Violetta's aria from act 1 of La traviata - 'È strano! è strano……Ah! fors e lui' [aria] - 'Sempre libera' [cabaletta].
Relations.
Yes.
Oh, dude, that's easy. You call it a "solo piece" or a "solo composition." It's like when your friend decides to go solo in a boy band - they just want all the spotlight to themselves, you know? So yeah, it's basically a piece of music written for one instrument to show off its skills without any distractions.
Apnea