Music theory, a Rare card

The card carries these facts from its Wikipedia article.

• The Oxford Companion to Music describes three interrelated uses of the term "music theory": The first refers to the "rudiments" needed to understand music notation such as key signatures, time signatures, and rhythmic notation, the second is a study of scholars' views on music from antiquity to the present, the third is a sub-topic of musicology that "seeks to define processes and general…
• The musicological approach to theory differs from musical analysis "in that it takes as its starting-point not the individual work or performance but the fundamental materials from which it is built." Music theory is frequently concerned with describing how musicians and composers make music, including tuning systems and composition methods among other topics.
• Because of the ever-expanding conception of what constitutes music, a more inclusive definition could be the consideration of any sonic phenomena, including silence.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Music theory article was read about 200,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 88 and blocks with 89: each hit it takes is cut by 36 %.

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The cards just above and just below Music theory in the power ranking, all domains together.