Hard rock Styx helped further cement heavy rock in the Midwest as a form of stadium rock. In 1978, Van Halen emerged from the Los Angeles music scene with a sound based around the skills of lead guitarist Eddie Van Halen. He popularised a guitar-playing technique of two-handed hammer-ons and pull-offs called tapping, showcased on the song "Eruption" from the album "Van Halen", which was highly influential in re-establishing hard rock as a popular genre after the punk and disco explosion, while also redefining and elevating the role of electric guitar. The opening years of the 1980s saw a number of changes
Äspö Hard Rock Laboratory through the bedrock which takes the visitors as far as 500 meters below ground. Äspö Hard Rock Laboratory Äspö Hard Rock Laboratory is a research site located outside Oskarshamn in Sweden. The Äspö Hard Rock Laboratory is a research facility for future geological disposal of spent nuclear fuel. At the laboratory a series of experiments are performed at depths of 500 meters into the bedrock. The laboratory is used by both Swedish and international experts. There is no spent nuclear fuel on the site which makes it possible to keep the Äspö laboratory open to the public. There is an