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It is possible, that the history of rock music is much older than it seems at first glance. For example, sound that looks like a guitar distortion effect and riffs of musical phrases have been known since the Middle Ages. To illustrate my observations, I took a backing track of the classic hard rock composition Iron Man by Black Sabbath and played a part for guitar on an instrument of the 13th century, it turned out a very organic combination This medieval stringed instrument is called an organistrum,
