Pugh Rogefeldt had a large number of hits in the '70s and for a while he widened Swedish mainstream rock with playful arrangements and by merging many different styles. But maybe Rogefeldt's most important contribution was to break the language barrier for Swedish rock bands. Not only did he use Swedish, but he also used it in a way that hadn't been done before, including the expressiveness and singing techniques of modern rock. Later in the '70s, Rogefeldt turned to more straightforward rock & roll, and in the '80s, his career slowed down considerably as rock & roll started to seem increasingly out of date. A period with Grymlings in the early '90s was very successful commercially, but earned him little musical respect. The very quiet period that followed was ended with the release of a solo album in the late '90s. Rogefeldt remained well-respected for what he had done, but of little contemporary importance.