 From about 1967 bands like Cream and the Jimi Hendrix Experience had moved away from purely blues-based music into psychedelia.By the 1970s, blues rock had become heavier and more riff-based, exemplified by the work of Led Zeppelin and Deep Purple, and the lines between blues rock and hard rock "were barely visible", as bands began recording rock-style albums.The genre was continued in the 1970s by figures such as George Thorogood and Pat Travers, but, particularly on the British scene (except perhaps for the advent of groups such as Status Quo and Foghat who moved towards a form of high energy and repetitive boogie rock), bands became focused on heavy metal innovation, and blues rock began to slip out of the mainstream.