It doesn't need to be a cricket, or even a cicada (most cicadas make noise in the daytime).
There are a few species of loud katydids that make a continuous high-pitched sound.
Let's check out some more noisy Cuban bugs!
The Robust Conehead. Listen here
The Cuban Ground Cricket is a fast trill sound, but at 42 pulses per second, it is a relative slowpoke to this turbo katydid at 208! (normal cricket noise is somewhere around 5/second).
I'm not sure with the volume (up to an ear-splitting 100db) and insane speed that it could be reliably recorded with a cellphone. The mic on my Samsung doesn't 'do' loud well and I'm pretty sure it's all compressed. Perhaps the victim doing this AP recording had some better tech to use. We really don't know how it was made, or altered, or even transferred for that matter.
The runners up :
The Swift Conehead. Listen here
The Broad-tipped (Triops) Conehead. Listen here
. (atypical summer song)
All the Coneheads are loud, but these 3 can live in Cuba and make a continuous high-pitched tone.