Jan Akkerman was the lead guitarist in a Dutch rock band named Focus in the 1970s. He was amazing! Focus created rock music with the improvisation and feel of jazz but it was not jazz rock.
So it seems that one day they took Jan Akkerman and shoved him together with Paco de Lucia, a brilliant Spanish classical guitarist. The result was this and, to my mind it is incredible! These two are both virtuosos. Note the bit where Paco glances over at Jan in consternation. What is he thinking? Is he thinking: “Wow! This guy is better than me!”, Is he thinking: “What the hell is this guy doing!”