Nightmares on Wax is DJ and musician George Evelyn (born c. 1970), also known as DJ EASE (Experimental Sample Expert), from Leeds, UK.

https://soundcloud.com/resident-advisor/les-nuits-2/s-1Q50s

Sample from:

https://soundcloud.com/jose48-1/summer-in-the-city-quincy

[via Stella Polaris]