If you are interested in this topic, locked grooves may also interest you. https://en.wikipedia.org/wiki/Unusual_types_of_gramophone_records https://en.wikiped

If you are interested in this topic, locked grooves may also interest you. https://en.wikipedia.org/wiki/Unusual_types_of_gramophone_records https://en.wikipedia.org/wiki/Unusual_types_of_gramophone_re...