I got one.
Being a musician I've been stumped on the official meaning of the word so it'll be good to find info on it. I've gone with it meaning a particular style of playingcongas but the word is........
I've heard it used in sentences to describe other musicians (mostly congueros) like:
"chacho bro, ese tipo tiene un mazacote bien cabron."
Note that many songs are not always 100% of one type. Just like in many art forms people blend and mix and come up with new styles. So one song can have the main structures of one style but with stuff added to that..