Cascara is a rhythmic pattern belonging to Afro-Cuban music. Traditionally played on the shell of the timbales it lends itself to many further applications and orchestrations on different sounds and surfaces, a cowbell , a crash/ride cymbal, the shell of a floor-tom or, like in this case, on the hihat
In this particular case, we’re not using it in a traditional/conventional music setting, but just taking its inner concept and sound, so to create a fat-back groove, with a ghost-notes and bass-drum figure conceived to well fit with the bass-line and all the rhytmic appointments of the track.
As a first step, in this example you can listen/watch the application with the click, so to just concentrate on the drums part.
Below, you can download the score and the audio file reference for your practice