Super important which classical composer did the most for the opera genre? beethoven monteverdi haydn mozart

Can anyone give me a website (without the link just the name or a screenshot of the site) to a tutorial for music production like fl studio where i can learn for free? cause i'm trying to become a solo artist but i don't know how to use the software yet.

:) this measure should equal four beats. which note needs a dot added to make the measure correct? assume that a quarter note equals 1 beat.

With the downplay of emotion in classical music, music from this period doesn't usually exhibit the traits necessary for enduring quality.