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Corporate Information - Additional Information (Details)
12 Months Ended
Dec. 31, 2021
Disclosure Of General Information About Financial Statements [Line Items]  
Entity incorporation, state or country code E9
Entity incorporation, date of incorporation Sep. 13, 2017
Principal activities investment holding
Subsidiaries  
Disclosure Of General Information About Financial Statements [Line Items]  
Principal activities distribution of commercial copyrights, provision of music education solutions, sales of musical instruments and provision of services related to music events
Rosenkavalier Group  
Disclosure Of General Information About Financial Statements [Line Items]  
Percentage of equity interest in subsidiaries 100.00%