According to American academic Christophe Den Tandt, many musicians during the post-psychedelic era adopted a stricter sense of professionalism and elements of classical music, as evinced by the concept albums of Pink Floyd and the virtuosic instrumentation of Emerson, Lake and Palmer and Yes. "Early-1970s post-psychedelic rock was hatched in small or medium-sized structures", he adds, naming record labels such as Virgin Records, Island Records, and Obscure Records. Many of the British musicians and bands that had embraced psychedelia moved into creating the progressive rock genre in the 1970s. King Crimson's album "In the Court of the Crimson King" (1969), has been seen as an important link between psychedelia and progressive rock. While some bands such as Hawkwind maintained an explicitly psychedelic course into the 1970s, most bands dropped the psychedelic elements in favour of embarking on wider experimentation. As German bands from the psychedelic movement moved away from their psychedelic roots and placed increasing emphasis on electronic instrumentation, these groups, including Kraftwerk, Tangerine Dream, Can and Faust, developed a distinctive brand of electronic rock, known as kosmische musik, or in the British press as "Krautrock". Their adoption of electronic synthesisers, along with the musical styles explored by Brian Eno in his keyboard playing with Roxy Music, had a major influence on subsequent development of electronic rock. The incorporation of jazz styles into the music of bands like Soft Machine and Can, also contributed to the development of the emerging jazz rock sound of bands such as Colosseum.