i hope no one has asked you this, but what is happening in 1:47 on "long long long journey" ?  https://youtu.be/0jEm6owSKFU?t=107  The high frequency beeping is really interesting, as it seems to be irregular rhythms/non-linear. if i slow it down, it seems to be live as it is not exactly equal spacing for all notes.  this is my attempt at transcribing the first bar, ignoring unequal note spacing, with x as beep, and o as a rest  xxxo|xxox|oxxo|xoxo|  thanks a ton if you answer it!
the behavior seems to be that of a timbale player. it's all transcribable as 16th notes, but consider some of them flams. and the rhythm is stretched ever so slightly. i think if you imagine a loud timbale player is briefly having his/her party moment, it may become clear. also it's not a loop, it's a full take played through, so you're not gonna get the same thing for each bar