🌐EnglishEnglishFrançaisРусский한국어中文日本語EntityQ7782366· pop 7theoretical keyAlso known as impossible keya key whose key signature has at least one double-flat or double-sharpAvailable in 7 languagesFrançais日本語Русскийsimplezh_yue한국어via Wikidata sitelinks · CC0Connectionskey signatureEntityCategoriesUnprintworthy redirects