Loopcidity's rock library consists of 454 instrumental samples across electric guitar, acoustic guitar, drums and bass guitar. 
http://www.loopcidity.co.uk/#!rock/c81l

Loopcidity Rock Demo

Loopcidity's experimental/math-rcok library consists of 580 instrumental samples across drums, guitar, bass guitar and synth.
http://www.loopcidity.co.uk/#!experimental/c1cmh

Loopcidity Experimental Demo

Loopcidity's jazz library consists of 730 instrumental samples across piano, saxophone, flute, drums, electric guitar and bass guitar.
http://www.loopcidity.co.uk/#!jazz/c1u3o