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| MUSICOLOGY TERMINOLOGY |
| The Penthouse | A record that has reached number one. | ||
| The High Class District | A record that has reached the top 10. | ||
| Hit Record Status | A record that has reached the top 20. | ||
| Almost Hit | A record that fell short of the top 20. | ||
| The Golden Era | The period of time between 1923 and 1949. | ||
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