[bams]

I found this midi file on a Disklavier diskette. It appears to be a song for voice and piano. It's among several other midis on that diskette that I have identified from my Classical Italian Songs book. But I can't identify this one. The name of this file is 03A!VI→1.MID. Other files on this diskette have names that contain the first two letters of the the composer's name, so this unidentified song may be by someone whose name begins with Vi, but it doesn't sound like Vivaldi.
See https://1drv.ms/u/s!AguGKoXBly-ygw0P6W60KiU100pV?e=gZNwwS

 

[Guest]

It is indeed an aria by Vivaldi titled "Un certo non so che..." from his opera "Arsilda, regina di ponto." The version on the midi is an arrangement by Alessandro Parisotti, an Italian composer who arranged a number of old arias in the 19th century style, which is why it doesn't sound like Vivaldi that much! Parisotti also composed some arias himself and attributed them to baroque composers.
Here's the Parisotti version:

And the Vivaldi original for comparison:

 

[bams]

Thanks so much for that correct and enlightening answer!

 

[Guest]

You're welcome!