A style or concept of playing a tune(s) or an entire gig, where seasoned, usually “old school” musicians perform standards/classics and/or descargas (jam sessions) without the aid of written music (charts). In the case of a standard, the performance is loosely based on the original song, but much is improvised by the musicians, in this case “Guataqueros”.
Just because you play an instrument does not mean you can play guataca. It requires years of experience, familiarity of the classics and the art of improvisation in our particular genre. See the example below.